- Department of Civil Engineering
University of Beira Interior
6201-001 Covilhã, Portugal
Antonio Albuquerque
Universidade da Beira Interior, Civil Engineering and Architecture, Department Member
- Antonio Albuquerque is a Assistant Professor and Senior Researcher at the Department of Civil Engineering and Archite... moreAntonio Albuquerque is a Assistant Professor and Senior Researcher at the Department of Civil Engineering and Architecture of the University of Beira Interior (Covilhã, Portugal).
Teaching activity:
- Water Supply and Drainage Systems.
- Environmental Sanitation.
- Environmental Impact Assessment.
Specialization:
- Wastewater treatment and reuse.
- Waste valorisation.
- Environmental impact assessment (water quality).
Research activity:
- Nutrient removal in biofilm wastewater treatment processes.
- Water reuse.
- Valorisation of wastes.
- Sensors for environmental systems.
Areas of professional activity and consultancy:
- Project, operation and rehabilitation of water and wastewater systems;
- Environmental impact assessment studies.edit
Research Interests: Environmental Engineering, Environmental Science, Environmental Education, Water, Environmental Studies, and 128 moreIrrigation, Water quality, Water resources, Water and wastewater treatment, Environmental Sanitation, Wastewater Treatment, Agriculture, Energy and Environment, Sustainable Water Resources Management, Solo Performance, Water Reuse, Environmental Sustainability, Ambient Intelligence, História Ambiental-Eco-História / Environmental History, Legislação Ambiental - Políticas Ambientais, Direito Ambiental, Educación Ambiental, Educação Ambiental, Engenharia, Wastewater, Derecho Ambiental, Saneamiento Ambiental, Tratamiento de aguas, Geoprocessamento aplicado as questões Ambientais, Water and Wastewater, Desenvolvimento Regional e Meio Ambiente, Ciencias Ambientales, Quimica ambiental, Water and Sanitation, IMPACTO AMBIENTAL, SISTEMAS DE GESTION AMBIENTAL, Meio Ambiente, Water, Sanitation, and Hygiene, Ambient Media, CAPTACION DE AGUA LLUVIA, Ambiente, Manual de Construcción de Reservorios de Agua de Lluvia, Medio Ambiente, Water Supply and Sanitary Engineering, Gestão Ambiental, Engenharia Química, Engenharia Ambiental, Relacion Medio Ambiente Y Sociedad, Cosecha De Agua Para La Agricultura, Caracterizaciones ambientales, PSICOLOGIA AMBIENTAL, Ambiental, Gestión Ambiental, Treatment and Reutilization, Geografia, Geomorfologia, Geologia, Planejamento Ambiental, Agua subterránea (groundwater), Historia ambiental, Calidad De Agua, Indices de calidad de agua, Calidad Del Agua, Contaminación del Agua, Toxicidad Ambiental, Tratamento De Efluentes, Engenharia Florestal, Agricultura, Agua, Ingeniería Sanitaria, Contaminacion Ambiental, Sanitation, Irrigacion, Ingeniería Ambiental, Aguas Subterráneas, ABASTECIMIENTO DE AGUA, Economía Ambiental, Evaluaciones De Impacto Ambiental, Reuso, Residuais, Esgoto, água, Recarga, Taxonomía En Macroinvertebrados Zooplancton Y Fitoplancton De Agua Dulce, Ing. Ambiental, Planificación Territorial, Medio Ambiente Y Políticas De Desarollo, DISEÑO DE PLANTA DE TRATAMIENTO DE AGUA POTABLE, Saneamento Ambiental, Manual de Construccion de Reservorios de Agua, Saneamento, Diagnostico Ambiental, Percepção Ambiental, Abastecimento De água, Agua potable, Objetivos sanitarios 2010-2020, Engenharia Civil, Engenharia Mecânica, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Tratamento de Água e Água residuais, Tratamiento De Aguas Residuales, Water Supply and Sanitation, Educacion ambiental, Solos, Gestion Ambiental, Risco Ambiental, Análise Ambiental, Gestión Del Agua, Reutilização De Aguas Residuais Tratadas, Ingenieria Sanitaria, Arqueologia medieval. Al-Andalus. Arqueología Hispanomusulmana. Califato. Medina de Toledo. Reino taifa de toledo. Hábitar rural. Granjas. Norias. Agricultura. Agricultura de irrigación. Ganaderia. Campo de Criptana. Ciudad Real, Percepciones ambientales, Medio Ambiente y Cooperación Internacional para el Desarrollo, Educação Ambiental, Meio Ambiente, Desenvolvimento Sustentável, Plantas De Tratamientos De Aguas Residuales, Valoración economica de bienes y servicios ambientales, Saneamento Básico, Derecho de Aguas, Calidad De Agua De Manantiales, Agua y saneamiento, Ciências Ambientais, Sanitasi, Comparación de las tarifas de agua potable en las principales ciudades de Latinoamérica, Sanitário, Ambientes Lacustres Boscosos Norpatagónicos, Parametros de descarga agua de prueba hidrostaticas bolivia, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Derecho Al Agua, Reuso De áGua Métodos Multicriteriais, Ingenieria Ambiental, Diagnósticos Ambientales, Conservacion De Suelo Y Agua, Tratamento Da Agua, Saneamiento Ambiental, Clean and Sanitize Premise, and Saneamiento
O crescimento excessivo de biomassa e a acumulação de matéria sólida em suspensão, eventualmente associados à presença de bolhas de ar e de material de enchimento desfragmentado, podem potenciar a formação de zonas mal irrigadas e de... more
O crescimento excessivo de biomassa e a acumulação de matéria sólida em suspensão, eventualmente associados à presença de bolhas de ar e de material de enchimento desfragmentado, podem potenciar a formação de zonas mal irrigadas e de volumes mortos que constituem pontos de resistência ao escoamento em biofiltros. Estas zonas contribuem para a colmatação progressiva do leito e para o aumento da perda de carga do escoamento, podendo daí resultar a diminuição da eficiência da remoção de substratos. Utilizando um biofiltro vertical de fluxo descendente, realizaram-se dois ensaios experimentais, à velocidade média de escoamento de 0,39 m h-1, para as cargas orgânicas volúmicas médias de 51,2 g C m3 h-1, com o leito não arejado (ensaio E1), e de 51,4 g C m3 h-1, com o leito parcialmente arejado (ensaio E2), com a duração de 16,0 e 8,0 dias respectivamente. Os resultados permitiram observar que a perda de carga ocorreu, principalmente, no troço entre o topo do leito (TL) e a toma P2, onde ...
Most of the water needed for domestic, agricultural, recreational and industrial activities in the Alcochete municipality (Portugal) comes from groundwater sources. However, doubts remain on the state of its quality and attractiveness for... more
Most of the water needed for domestic, agricultural, recreational and industrial activities in the Alcochete municipality (Portugal) comes from groundwater sources. However, doubts remain on the state of its quality and attractiveness for the current uses. A monitoring campaign was set in 67 groundwater sources (26 wells and 41 boreholes) for the period of 4 months to evaluate the water quality status. In order to better analyse the large and complex available information it was necessary to setup a Geographic Information Systems (GIS), which allowed georeferencing data, creating relational databases and generating thematic and suitability maps for the use of groundwater. The results show that most of the water wells are chlorinated calcic type and have no minimum quality to be used for production of drinking water, but may be used for agricultural irrigation. Most o the water boreholes are chlorinated sodium type, and approximately 70.7% presents the minimum quality to be used for ...
The hydraulic characteristics of a biological laboratory packed bed, filled with a volcanic stone (puzzolane), have been experimentally investigated through tracer tests. Fifteen sets of assays at flow rates from 1 to 2.5 L h-1 in clean... more
The hydraulic characteristics of a biological laboratory packed bed, filled with a volcanic stone (puzzolane), have been experimentally investigated through tracer tests. Fifteen sets of assays at flow rates from 1 to 2.5 L h-1 in clean conditions and for two different superficial organic loadings (4 and 52 mg C L-1) were performed The residential time distribution (RTD) curves obtained have been analysed and three solutions of the advection-dispersion-reaction model have been fitted to the experimental data, in order to enable a better understanding of the bed behaviour. The results showed a considerable amount of dispersion through the filter as the carbon loading was increased, indicating a multiplicity of hydrodynamic states, approaching its behaviour to plug flow. In the upper 8 cm of the filter, in the presence of biomass, the flow regime was characterized by a completely mixed flow pattern with a large extent of dispersion, which suggests that there was a significant presence...
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A submerged biofilter (packed bed) partially aerated was used to study the removal of low pollutant loading that comes from secondary wastewater treatment. Four experiments were performed at organic loading from 5.4 to 77.2 g C m-3 h-1, a... more
A submerged biofilter (packed bed) partially aerated was used to study the removal of low pollutant loading that comes from secondary wastewater treatment. Four experiments were performed at organic loading from 5.4 to 77.2 g C m-3 h-1, a hydraulic loading of 0.26 m3 m-2 h-1 and a C/N-NH4+ ratio of 4.0. The results permitted the observation of simultaneous removal of organic carbon and nitrogen (nitrification/denitrification), with carbon removal and nitrification having occurred at good rates especially in the range between 25.8 and 51.6 g C m-3 h-1. At the top biofilter media, where DO concentrations and biomass were higher, carbon and ammonia nitrogen removal prevailed. The nitrate elimination occurred at low denitrification rates, mainly at the bottom biofilter media.
In Portugal, small rural communities present low service levels in terms of wastewater treatment when compared to large urban areas. The hydraulic and pollutant loads are variable over time due to the incoming of non-point sources (namely... more
In Portugal, small rural communities present low service levels in terms of wastewater treatment when compared to large urban areas. The hydraulic and pollutant loads are variable over time due to the incoming of non-point sources (namely from agricultural activities). The use of ecological treatment systems as horizontal subsurface flow (HSSF) constructed wetlands seemed to be a good solution for dealing with such load variability and without entailing excessive operation and maintenance costs. However, they should also allow fulfilling the goals of the Urban Wastewater Treatment Directive (91/271/EEC) and the Water Framework Directive (2000/60/EEC). The objective of the study was to evaluate the behavior of a HSSF system in the Cova da Beira region (Capinha) under the influence of transient loads, namely in terms of the variability of incoming flow-rate, organic matter (COD), nitrogen forms (total N, ammonia and nitrate) and suspended solids (TSS). The system showed an irregular r...
The performance of three constructed wetlands systems treating landfill leachate is described. Two are located in northern Poland (Szadolki near Gdansk and Gatka near Miastko) and one in southern Sweden (Örebro). The constructed wetlands... more
The performance of three constructed wetlands systems treating landfill leachate is described. Two are located in northern Poland (Szadolki near Gdansk and Gatka near Miastko) and one in southern Sweden (Örebro). The constructed wetlands in Szadolki consists of two parallel silty soil beds planted with reed with sub-surface horizontal flow of sewage. The constructed wetland in Gatka is a willow plantation on sandy soil, receiving leachate after preliminary sedimentation in a retention pond. The system in Örebro consists of a series of ponds with a surface flow of leachate, preceded by pre-treatment in an aerated tank with nitrogen stripping. The best treatment efficiencies were observed at Örebro. At the sub-surface flow wetlands in Szadolki and Gatka clogging problems occurred due to the unsatisfactory pre-treatment and low soil hydraulic conductivity resulting in lower treatment efficiencies.
RESUMO A exploração de infra-estruturas rodoviárias tem contribuído para a produção de poluentes (e.g. SST, metais pesados, óleos e gorduras e hidrocarbonetos) que podem induzir impactes ambientais negativos no solo, na vegetação e no... more
RESUMO A exploração de infra-estruturas rodoviárias tem contribuído para a produção de poluentes (e.g. SST, metais pesados, óleos e gorduras e hidrocarbonetos) que podem induzir impactes ambientais negativos no solo, na vegetação e no meio hídrico envolvente. Para minimizar os efeitos da descarga daqueles compostos no ambiente, têm sido projectados diversos sistemas de decantação e infiltração para as escorrências de
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Research Interests:
In the Water Treatment Plants (WTPs), the production of treated water generates residues, which are usually called water treatment residues (WTR). Most of these WTPs discharge waste into watercourses, despite the national solid waste... more
In the Water Treatment Plants (WTPs), the production of treated water generates residues, which are usually called water treatment residues (WTR). Most of these WTPs discharge waste into watercourses, despite the national solid waste policy assigning responsibility for adopting sustainable ways to disposal the wastes to the generating source, because its launch “in natura” in water bodies is harmful. The aim of this work was to determine the physical characteristics of the waste generated in a Water Treatment Plant according to normative parameters in order to consider sustainable alternatives for its reuse in the production of building materials and, therefore, reducing the potential environmental impacts on water streams. Thus, the following tests were performed on the residue: consistency index, granulometry, scanning electron microscopy and energy dispersive spectroscopy. The results show the potential application of the residue for partially replacing soil and/or sand in the production of construction and building materials.
A produção de água tratada, nas Estações de Tratamento de Água (ETAs) gera lodo, também chamado de resíduo de ETA (RETA). A maior parte das ETAs descarrega estes resíduos em meios hídricos, apesar da política nacional de resíduos sólidos salientar que é de responsabilidade da fonte geradora adotar destinação sustentável aos resíduos, visto que o seu lançamento in natura nos corpos hídricos é prejudicial, tornando esse meio de disposição um sério passivo ambiental das companhias de saneamento. O objetivo do presente trabalho foi realizar a caracterização física do resíduo gerado em uma ETA buscando obter parâmetros com bases normativas e considerar alternativas sustentáveis de reincorporação do lodo na cadeia produtiva para confecção de materiais de construção, de maneira a reduzir o impacto causado com o lançamento do RETA nos cursos de água. Para isso, foram realizados ensaios de índices de consistência do resíduo, granulometria, microscopia de varredura eletrônica e espectroscopia por dispersão de energia. Os resultados encontrados nas análises do resíduo demonstram a potencialidade de sua aplicação em substituição parcial do solo e/ou da areia, sendo suas propriedades similares a matéria-prima, na fabricação de materiais de construção.
A produção de água tratada, nas Estações de Tratamento de Água (ETAs) gera lodo, também chamado de resíduo de ETA (RETA). A maior parte das ETAs descarrega estes resíduos em meios hídricos, apesar da política nacional de resíduos sólidos salientar que é de responsabilidade da fonte geradora adotar destinação sustentável aos resíduos, visto que o seu lançamento in natura nos corpos hídricos é prejudicial, tornando esse meio de disposição um sério passivo ambiental das companhias de saneamento. O objetivo do presente trabalho foi realizar a caracterização física do resíduo gerado em uma ETA buscando obter parâmetros com bases normativas e considerar alternativas sustentáveis de reincorporação do lodo na cadeia produtiva para confecção de materiais de construção, de maneira a reduzir o impacto causado com o lançamento do RETA nos cursos de água. Para isso, foram realizados ensaios de índices de consistência do resíduo, granulometria, microscopia de varredura eletrônica e espectroscopia por dispersão de energia. Os resultados encontrados nas análises do resíduo demonstram a potencialidade de sua aplicação em substituição parcial do solo e/ou da areia, sendo suas propriedades similares a matéria-prima, na fabricação de materiais de construção.
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Research Interests:
Low pH soils with insufficient organic matter can benefit from the application of reclaimed water (RW) and biosolids. The presence of nutrients also aids plant growth. This paper presents the results of two integrated research studies,... more
Low pH soils with insufficient organic matter can benefit from the application of reclaimed water (RW) and biosolids. The presence of nutrients also aids plant growth. This paper presents the results of two integrated research studies, both carried out in the Beira Interior Region (Covilhã, Portugal); one used RW for irrigation, the other applied paper mill sludge to agricultural land. In both cases, multiple criteria based on GIS tools were used for site selection. In the first study, the characteristics of RW analyzed over 2 years were found suitable for crop irrigation. The RW had moderate organic content, low electrical conductivity (CE), high nutrient content (N, P), and low concentrations of nitrate, metals and phytotoxic elements (Al, B, Cl and Na). The multi-criteria analysis was carried out taking into account environmental, technical and economic criteria and a suitable area of 30.5 ha was found for RW irrigation. In the second work, the paper mill sludge was considered suitable for application to agricultural land. Its concentrations of N, P and heavy metals did not a present risk for soil contamination and were suitable for soil improvement and crop production. A multi-criteria analysis based on similar criteria was conducted and a suitable area of 253 ha was found for sludge application.
Research Interests: Environmental Engineering, Environmental Science, Environmental Education, Water, Environmental Studies, and 72 moreWater quality, Water resources, Water and wastewater treatment, Water Engineering, Environmental Management, Water Treatment, Wastewater Treatment, Energy and Environment, Sustainable Water Resources Management, Water Quality (Engineering), Environmental GIS, Soil and Water Engineering, Remote Sensing and GIS Applied to Natural Resources and Population, Water Reuse, Environmental Sustainability, Remote sensing and GIS applications in Landscape Research, Water Resources engineering, Watershed Hydrology, Water Pollution, Geo-spatial analysis with GIS and GPS, Remote sensing and GIS, Application of GIS and RS for Integrated Watershed Management, Water Resources Management, Digital Watermarking, Industrial wastewater Treatment, Integrated Water Resources Management, Bioremediation of wastewater, Irrigation water Management, Earth and Environmental Sciences, GIS and Landscape Archaeology, (iv) Treatment of domestic and industrial wastewater by constructed wetland, (v) Advance oxidation processes for water and wastewater treatment, Wastewater, Water and Wastewater, Waste water treatment, Applied GIS for Urban Planning and Demographic Studies, Biological Wastewater Treatment, Multicriteria Decision Analysis, Multicriteria classification methods, Multicriteria decision making, Multicriteria Decision Aid, Análise Multicriterial, Water Supply and Sanitary Engineering, Adsorption and wastewater treatment, Residuos solidos, Gestão De Resíduos Sólidos Urbanos, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Biosolids management, Wastewater Engineering, Reuse, GIS AND REMOTE SENSING, Métodos De Decisión Multicriterio, Multicriteria, Tratamento De Efluentes, Biosolids, Water Quality Assessment, Tratamento de Água e Água residuais, Tratamiento De Aguas Residuales, Tratamento, Tratamento De Esgoto, Advanced Wastewater Treatment, Wastewater reuse, Spatial Multicriteria Decision Making, Water Quality, Surface Water and Ground Water Quality and Water Quality Index, Civil and Environmental Engineering, Multicritera Decision Making, Remote Sensing and GIS applications in Forestry, Clasificacion De Suelos Residuales, Geographic Information Systems (GIS), Reuso De áGua Métodos Multicriteriais, and Tratamento Da Agua
This paper presents an example of the importance of evapotranspiration in constructed wetlands, with vertical subsurface flow, comparing different methods of treatment efficiency calculations and discussing the influence of... more
This paper presents an example of the importance of evapotranspiration in constructed wetlands, with vertical subsurface flow, comparing different methods of treatment efficiency calculations and discussing the influence of evapotranspiration on removal rates. The application of reed, marked by high transpiration ability, is a cheap and effective method of landfill leachate disposal. A 2-year study examined the effectiveness of leachate treatment in constructed wetlands with reed. Two kinds of vertical subsurface flow systems: first with sand, and second with combined two layers of sewage sludge and sand has been tested. 1, 3, and 5 mm d−1 hydraulic loading rates of landfill leachate have been applied. Daily evapotranspiration was in the range from 0.98 to 2.99 mm d−1 in the first year of research and from 2.56 to 4.61 mm d−1 in the second year. The influence of evapotranspiration rate on chemical oxygen demand (COD) removal rate was examined. Two methods of removal efficiency calculation have been used: first based on inlet and outlet COD concentrations, second on mass balance determination. Research showed that the removal efficiency calculated as a comparison between initial and final concentration is significantly lower, than expected from mass balance, especially, when higher hydraulic loading rates were applied.
Research Interests: Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, Environmental Economics, and 116 moreEnvironmental Education, Aquatic Ecology, Environmental microbiology, Water, Wetlands, Phytoremediation, Phytochemistry, Environmental Studies, Water quality, Water resources, Water and wastewater treatment, Bioremediation, Water Purification, Water Engineering, Environmental Management, Environmental Sanitation, Water Treatment, Wastewater Treatment, Wetland Ecology, Energy and Environment, Sustainable Water Resources Management, Urban Wetlands, Soil and Water Engineering, Environmental Sustainability, Nitrogen Cycle, Water Resources engineering, Watershed Hydrology, Water Pollution, Aquaculture, Water Resources Management, Wetland Management, Industrial wastewater Treatment, Biological Engineering, Integrated Water Resources Management, Chemical and Biological Engineering, Bioremediation of wastewater, Irrigation water Management, Nutrient Cycling, Civil Society, Water Management, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Educación Ambiental, Educação Ambiental, Nitrogen Fixation, Wastewater, Water and Wastewater, Carbon and Water cycle, Waste water treatment, CHEMICAL REACTION ENGINEERING-OCTAVE LEVENSPIEL, Nutrient Management, Ciencias Ambientales, Bioremediation and Environmental microbiology, Water and Innovation, Water and Sanitation, Wetland, Biological Wastewater Treatment, Meio Ambiente, Water, Sanitation, and Hygiene, Water . Evapotranspiration . Penman–Monteith . Simplification . Model, Evapotranspiration, Manual de Construcción de Reservorios de Agua de Lluvia, Medio Ambiente, Water Supply and Sanitary Engineering, Adsorption and wastewater treatment, Physico-chemical method for ammonia removal from synthetic wastewate in batch and column studies, Gestão Ambiental, Wetlands Ecology, civil Engineer, Engenharia Ambiental, Biological Nitrogen Fixation, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Nitrogen, Wastewater Engineering, Constructed Wetlands, Calidad Del Agua, Contaminación del Agua, Rural water supply, Environmental Sanitation and Hygiene Education, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Sanitation, Ingeniería Ambiental, Chemical and Environmental Engineering, Wetland Conservation, Constructed Wetland, Objetivos sanitarios 2010-2020, Engenharia Civil, Procesos De Bioremediacion, CHEMICAL ENGINNERING, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Chemical Engineer, Water Supply and Sanitation, Wastewater reuse, Evapotranspirasi, Engenharia do Ambiente, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Mass balancing, Sanitasi, Sanitário, Sanitary Landfill, Sanitary Napkins Market, Sanitary Engineering, Nitrogen Removal In Wetlands, Treatment Wetlands for Nitrogen Removal, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Nitrogen Removal, Sanitary and Environmental Engineering, Chemical Enggineering, Utilization of Waste Nutrients, Recycling of Nutrients, Conservacion De Suelo Y Agua, Biological Systems Engineering, Clean and Sanitize Premise, and Engenharia Sanitária e Ambiental
Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-ε-caprolactone based biofilm carrier that... more
Nitrate removal from water has been accomplished by heterotrophic biofilms using organic carbon as a source of reducing power. To overcome the natural limitation in organic carbon in water, a poly-ε-caprolactone based biofilm carrier that serves simultaneously as a biofilm carrier and as a source of organic carbon was developed and tested in the present work. The feasibility of the new biofilm carrier for nitrate removal from water was evaluated in a packed bed reactor. The combination of size and structure provided a carrier element having high surface area and void volume, 1,170 m2/m3 and 67 %, respectively. A maximum denitrification rate of 4.4 mg N–NO3 −/(L.h) (9.2 mg N–NO3 −/(m2.h)) was achieved in the packed bed reactor at 20 °C and pH 7.0. Main advantages of the biofilm carrier developed in the present work are its mechanical stability in water even after biofilm formation and controlled release of organic carbon by enzymatic reactions. The proposed biotechnology to remove nitrate from groundwater is robust and easy to operate.
Research Interests: Environmental Engineering, Polymer Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 104 moreEnvironmental Economics, Chemical Education, Environmental Philosophy, Environmental Education, Aquatic Ecology, Environmental microbiology, Biofilms, Water, Polymer Chemistry, Polymer science, Environmental Studies, Water quality, Water resources, Environmental Planning and Design, Water and wastewater treatment, Bioremediation, Environmental Management, Sustainable Urban Environments, Wastewater Treatment, Chemical, Energy and Environment, Sustainable Water Resources Management, Environmental Chemistry, Biological invasions, Environmental Sustainability, Water Pollution, Biological Control, Aquaculture, Civil Procedure, Industrial wastewater Treatment, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Environmental Analytical Chemistry, Earth and Environmental Sciences, Civil Society, IT in civil and environmental engineering, Biological Sciences, Biodegradable polymer composites, Educación Ambiental, Chemicals, Wastewater, Biofilm, Saneamiento Ambiental, Tratamiento de aguas, CHEMICAL REACTION ENGINEERING-OCTAVE LEVENSPIEL, Ciencias Ambientales, Bioremediation and Environmental microbiology, Water and Sanitation, Biological Wastewater Treatment, Biological science, Meio Ambiente, Water, Sanitation, and Hygiene, Manual de Construcción de Reservorios de Agua de Lluvia, Medio Ambiente, Environmental Enginering, Denitrification, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Environmental Science & Engineering, Groundwater Quality, Calidad De Agua, Indices de calidad de agua, Civil Engineerig, Calidad Del Agua, Bioremediation of heavy metal contaminated soil, Contaminación del Agua, Agua, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Sanitation, Ingeniería Ambiental, Bacterial Biofilms, Chemical and Environmental Engineering, Engenharia De Materiais, Engenharia Civil, Procesos De Bioremediacion, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Tratamiento De Aguas Residuales, Civil Enginering, Agricultural and Environmental Engineering, Civil & Environmental Engineering, Civil Enginnering, Ciência e Engenharia de Materiais, Gestión Del Agua, Engenharia do Ambiente, Civil Eng, Calidad De Agua De Manantiales, Civil and Environmental Engineering, Sanitasi, Comparación de las tarifas de agua potable en las principales ciudades de Latinoamérica, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Bioremediaion, Environmental Enginneering, Geo Environmental Engineering, Environmental Science and Engineering, Processamento De Materiais, Conservacion De Suelo Y Agua, Civil Engg, Engenharia Sanitária e Ambiental, and Bioremediation & Composting
Biodegradability enhancement and detoxification of cork boiling wastewater (CBW) are required for the successful implementation of biological treatment options. We studied the possibility of achieving these goals through ozonation... more
Biodegradability enhancement and detoxification of cork boiling wastewater (CBW) are required for the successful implementation of biological treatment options. We studied the possibility of achieving these goals through ozonation pre-treatment by experimenting on the effect of ozone dose and pH. The CBW used had a pH of 5.81, a chemical oxygen demand (COD) of 1,865 mg L1, a biochemical oxygen demand (BOD5) of 498 mg L1 and total phenol (TP) and tannin compounds concentrations of 523 and 399 mg L1, respectively. The ozone doses ranged from 0.27 to 2.63 for the O3(applied)/COD0 ratios with samples at natural pH and set to 3.33 and 9.96. Ozonation allowed the BOD20/COD ratio (biodegradability index) to increase from 0.37 to 0.63 and a toxicity reduction from 3.08 to 1.24 TU (Microtox). The corresponding removals obtained were 15.2–62.0%, 38.4–83.2% and 56.7–92.1% for COD, TP and colour, respectively. The best outcome of ozonation pre-treatment requires O3(applied)/COD0 ratios over 1.5 and an acid pH. The increase of TP removals with ozone dose at acid pH led to biodegradability enhancement and CBW detoxification. However, for similar conditions the highest COD removals were obtained at alkaline pH due to the hydroxyl radicals’ high oxidation ability but lack of selectivity.
Research Interests: Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, Chemical Education, and 104 moreEnvironmental Education, Water, Environmental Studies, Water quality, Water resources, Water and wastewater treatment, Bioremediation, Water Engineering, Environmental Management, Wastewater Treatment, Chemical, Energy and Environment, Sustainable Water Resources Management, Environmental Chemistry, Soil and Water Engineering, Ozonation, Environmental Sustainability, Water Resources engineering, Water Pollution, Aquaculture, Water Resources Management, Industrial wastewater Treatment, Biological Engineering, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Civil Society, IT in civil and environmental engineering, Educación Ambiental, Chemicals, Educação Ambiental, Wastewater, Toxicity, Derecho Ambiental, Saneamiento Ambiental, Tratamiento de aguas, Water and Wastewater, Ciencias Ambientales, Bioremediation and Environmental microbiology, Water and Sanitation, Biological Wastewater Treatment, Meio Ambiente, Water, Sanitation, and Hygiene, Ambient Media, Manual de Construcción de Reservorios de Agua de Lluvia, Bioreactor Design and Optimization, Medio Ambiente, Environmental Enginering, Water Supply and Sanitary Engineering, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Ozonation and Biodegradation of Azo Dyes, Environmental Science & Engineering, Groundwater Quality, Calidad De Agua, Indices de calidad de agua, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Agua, Ingeniería Sanitaria, Sanitation, Ingeniería Ambiental, Chemical and Environmental Engineering, Objetivos sanitarios 2010-2020, Engenharia Civil, Engenharia Civil, Chemical Engeneering, Procesos De Bioremediacion, CHEMICAL ENGINNERING, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Tratamiento De Aguas Residuales, Civil Enginering, Chemical Engineer, Water Supply and Sanitation, Agricultural and Environmental Engineering, Civil & Environmental Engineering, Biodegradability, Ingenieria Sanitaria, Engenharia do Ambiente, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Sanitasi, Sanitary Engineering,irrigation Engineering,intergrated Water Resources Managenent, Sanitário, Sanitary Engineering, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Environmental Enginneering, Geo Environmental Engineering, Sanitary and Environmental Engineering, Chemical Enggineering, Environmental Science and Engineering, Conservacion De Suelo Y Agua, Cork Wastewater, Biological Systems Engineering, Civil Engg, Engenharia Sanitária e Ambiental, and Chemical and Biomolecular/Biological Engineering
Cork boiling wastewater pollutants were fractionated by sequential use of four ultrafiltration membranes and five fractions were obtained: four retentates (>100, 50–100, 20–50 and 10–20 kDa) and one permeate (<10 kDa); which were used to... more
Cork boiling wastewater pollutants were fractionated by sequential use of four ultrafiltration membranes and five fractions were obtained: four retentates (>100, 50–100, 20–50 and 10–20 kDa) and one permeate (<10 kDa); which were used to study the correlation of molecular size with biodegradability and toxicity before and after ozonation. The results show that molecular size is correlated with organic load and restrains biodegradability. The fraction with >100 kDa corresponds to 56% of the organic load and the one with <10 kDa only 8%. The biodegradability of fractions increased 182% with fractions molecular size reduction from >100 to < 10 kDa and the chemical oxygen demand (COD) was from 3436 to 386 mg L−1. For biodegradability enhancement the best outcome of ozonation was obtained with compounds having molecular size >20 kDa and range from 5% up to 175% for applied ozone doses to COD ratios between 0.15 and 0.38.
Research Interests: Environmental Engineering, Chemical Engineering, Environmental Science, Environmental Economics, Chemical Education, and 108 moreEnvironmental Education, Aquatic Ecology, Environmental microbiology, Water, Environmental Studies, Membranes, Water quality, Water resources, Catalysis, Water and wastewater treatment, Bioremediation, Water Purification, Water Engineering, Environmental Management, Sustainable Urban Environments, Wastewater Treatment, Nanocomposites, Chemical, Energy and Environment, Waste Management, Sustainable Water Resources Management, Environmental Chemistry, Reaction engineering, Ozonation, Environmental Sustainability, Water Pollution, Biological Control, Water Resources Management, Transport phenomena, Industrial wastewater Treatment, Biological Engineering, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Environmental Analytical Chemistry, Earth and Environmental Sciences, Water Management, IT in civil and environmental engineering, Biological Sciences, Biodegradation, (ii) Development of biological wastewater treatment system for wastewater containing toxic, persistent and less biodegradable pollutants, (iv) Treatment of domestic and industrial wastewater by constructed wetland, (v) Advance oxidation processes for water and wastewater treatment, Chemicals, Wastewater, Saneamiento Ambiental, Tratamiento de aguas, Water and Wastewater, Waste water treatment, CHEMICAL REACTION ENGINEERING-OCTAVE LEVENSPIEL, Bioremediation and Environmental microbiology, Water and Sanitation, Biological Wastewater Treatment, Biological science, Manual de Construcción de Reservorios de Agua de Lluvia, GAS CHEMICAL ENGINEERING, Water Supply and Sanitary Engineering, Kinetics of Biodegradation/bioremediation, Biodegradation of toxic, oil spill, petroleum, solid waste (especially plastics-Low density polyethylene), Mitochondria DNA, Apoptosis, Study of emotions in degenerative diseases and in Autism affected children., Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Ozonation and Biodegradation of Azo Dyes, Environmental Science & Engineering, Groundwater Quality, Calidad Del Agua, Bioremediation of heavy metal contaminated soil, Contaminación del Agua, Ultrafiltration membrane, Agua, Chemical Engineering Process Design, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Ingeniería Sanitaria, Chemical and Environmental Engineering, Elementry Principles Of Chemical Engineering, Waste water treatment using MBR, Ozone, Chemical Engeneering, Procesos De Bioremediacion, Biofuel cells, Cork Quality, CHEMICAL ENGINNERING, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Chemical Engineer, Agricultural and Environmental Engineering, Civil & Environmental Engineering, Chemical Eng, Ingenieria Sanitaria, MBR, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Aquqculture bioremediation and waste water treatment, Sanitary Landfill, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Bioremediaion, Reclaimed Effluent, Environmental Enginneering, Geo Environmental Engineering, Reactor Design, Sanitary and Environmental Engineering, Chemical Enggineering, Environmental Science and Engineering, Conservacion De Suelo Y Agua, Structured Catalysis, Biological Systems Engineering, Engenharia Sanitária e Ambiental, Chemical and Biomolecular/Biological Engineering, and Bioremediation & Composting
This research evaluates the effect of both organic and ammonia loading rates and the presence of plants on the removal of chemical oxygen demand and ammonia nitrogen in horizontal subsurface flow constructed wetlands, 2 years after the... more
This research evaluates the effect of both organic and ammonia loading rates and the presence of plants on the removal of chemical oxygen demand and ammonia nitrogen in horizontal subsurface flow constructed wetlands, 2 years after the start-up. Two sets of experiments were carried out in two mesocosms at different organic and ammonia loading rates (the loads were doubled); one without plants (control bed), the other colonized with Phragmites australis. Regardless of the organic loading rate, the organic mass removal rate was improved in the presence of plants (93.4 % higher for the lower loading rate, and 56 % higher for the higher loading rate). Similar results were observed for the ammonia mass removal rate (117 % higher for the lower loading rate, and 61.3 % higher for the higher loading rate). A significant linear relationship was observed between the organic loading rate and the respective removal rates in both beds for loads between 10 and 13 g m−2 day−1. The presence of plants markedly increase removal of organic matter and ammonia, as a result of the role of roots and rhizomes in providing oxygen for aerobic removal pathways, a higher surface area for the adhesion and development of biofilm and nitrogen uptake by roots.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Botany, and 130 moreLandscape Ecology, Environmental Science, Environmental Education, Plant Ecology, Aquatic Ecology, Environmental microbiology, Quality, Biofilms, Water, Wetlands, Conservation Biology, Phytoremediation, Landscape Architecture, Environmental Studies, Biochemical Engineering, Ecological Design, Community Ecology, Water quality, Water resources, Biotechnology, Bioenergy, Water and wastewater treatment, Bioremediation, Environmental Management, Biology, Ecology, Water Treatment, Wastewater Treatment, Built Environment, Rivers, Vegetation Ecology, Energy and Environment, Sustainable Water Resources Management, Water Quality (Engineering), Forest Ecology, Landscape Urbanism, Environmental Sustainability, Water Pollution, Biological Control, Aquaculture, Biological Engineering, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Remediation, IT in civil and environmental engineering, Biological Sciences, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Lakes, Biofuels, Biodiversity Research, Educación Ambiental, Educação Ambiental, Soil contamination, Derecho Ambiental, Microbiology,Water pollution, Phytochemicals and antimicrobial potentials of medicinal plants, Ciencias Ambientales, Marine, Bioremediation and Environmental microbiology, Water and Sanitation, Freshwater, Water, Sanitation, and Hygiene, Water . Evapotranspiration . Penman–Monteith . Simplification . Model, Evapotranspiration, Ecosystems, Water Supply and Sanitary Engineering, New, Plant uptake of nitrogen in frozen tundra soil, before and during thaw, NWT, Canada, Potential Evapotranspiration, Gestão Ambiental, civil Engineer, Microbial biofilms, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Pollution, Environmental Science & Engineering, Groundwater Quality, Constructed Wetlands, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Ingeniería Sanitaria, Native Plants, Sanitation, Ingeniería Ambiental, Bacterial Biofilms, Chemical and Environmental Engineering, Sustainable Landscapes, Engenharia Civil, Bioprocessing, Mooving Bed Biofilm Reactor, Plant Nutrient Management, Residue management , Nitrogen use effeciency, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Agricultural and Environmental Engineering, Civil & Environmental Engineering, Conceptualization, Landscape and Land-use-history, Evapotranspirasi, Engenharia do Ambiente, Aggreggates, Civil and Environmental Engineering, Sanitasi, Reeds, LECA, Pant Uptake, Sanitary Landfill, Sanitary Engineering, Bioproducts, Biomass Processing, Alpine and Arctic Research, Sustainable Water & Sanitation, Decontamination, Gestión Integrada Del Agua, Water Self Purification, Improving, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Aerobic Granular Sludge Technologies, Environmental Enginneering, Geo Environmental Engineering, Sanitary and Environmental Engineering, Environmental Science and Engineering, Conservacion De Suelo Y Agua, and Engenharia Sanitária e Ambiental
This study was on the technical and biological characteristics of a partial-SHARON submerged-filter bioreactor of 3 L. The main focus was the influence of the hydraulic retention time (HRT) on biofilms. For this purpose, we used molecular... more
This study was on the technical and biological characteristics of a partial-SHARON submerged-filter bioreactor of 3 L. The main focus was the influence of the hydraulic retention time (HRT) on biofilms. For this purpose, we used molecular tools based on the partial 16S rRNA genes. The results showed that the HRT may affect the nitrification processes of a bioreactor using synthetic
wastewater containing 600 mg/L of ammonia. It was found
that an HRT of 0.5 day transformed 100 % of the ammonium
into nitrite. However, when the HRT was decreased to 0.4 day, there was a significant reduction (35 %) in the quantity of ammonia transformed, which confirmed the complexity of the system operation. Moreover, a PCRTGGE approach highlighted the differences observed. The results obtained showed that an HRT of 0.5 day reduced bacterial biodiversity in the biofilms, which were mainly formed by Nitrosomonas and Diaphorobacter. In contrast, an HRT of 0.4 day facilitated the formation of heterogeneous biofilms formed by nitrifying bacteria, such as Nitrosomonas sp., Nitrosospira sp., and Nitrosovibrio sp.).
wastewater containing 600 mg/L of ammonia. It was found
that an HRT of 0.5 day transformed 100 % of the ammonium
into nitrite. However, when the HRT was decreased to 0.4 day, there was a significant reduction (35 %) in the quantity of ammonia transformed, which confirmed the complexity of the system operation. Moreover, a PCRTGGE approach highlighted the differences observed. The results obtained showed that an HRT of 0.5 day reduced bacterial biodiversity in the biofilms, which were mainly formed by Nitrosomonas and Diaphorobacter. In contrast, an HRT of 0.4 day facilitated the formation of heterogeneous biofilms formed by nitrifying bacteria, such as Nitrosomonas sp., Nitrosospira sp., and Nitrosovibrio sp.).
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 175 moreGeology, Hydrogeology, Soil Science, Education, Biogeochemistry, Architecture, Aquatic Ecology, Environmental microbiology, Climate Change, Quality, Biofilms, Water, Hydrology, Hydraulics, Phytoremediation, International Development, Environmental Studies, Urban History, Biochemical Engineering, Water quality, Water resources, Ecotoxicology, Catalysis, Tropical Ecology, Biotechnology, Energy, Bioenergy, Process Modeling and Simulation, Arsenic Contamination in Ground Water, Water and wastewater treatment, Bioremediation, Water Availability, Water Purification, Process Control, Water Engineering, Environmental Management, Networks, Corporate Sustainability, Urbanism, Water Treatment, Wastewater Treatment, Rivers, Surface Water Modeling, Sustainable Water Resources Management, Water Quality (Engineering), Soil and Water Engineering, Tertiary wastewater treatment, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Nitrogen Cycle, Water Resources engineering, Water Pollution, Water Chemistry, Landscape, Water Resources Management, Irrigation water use efficiency, Water Resources (Environment), Environmental Pollution, Industrial wastewater Treatment, Integrated Water Resources Management, Water Resources and Environmental Engineering, Bioremediation of wastewater, Wastewater engineering, Green Buildings, Air Pollution Monitoring, (4) Biological/physiochemical water/wastewater treatment technology;, Water Management, Remediation, Planning, Water Policy, Biological Nutrient Removal, Phosphorus, (ii) Development of biological wastewater treatment system for wastewater containing toxic, persistent and less biodegradable pollutants, (iv) Treatment of domestic and industrial wastewater by constructed wetland, (v) Advance oxidation processes for water and wastewater treatment, Lakes, Biofuels, Cities, Educación Ambiental, Educação Ambiental, global Climate change, Nitrogen Fixation, Water Supply, Wastewater, Soil contamination, Water and Wastewater, Microbiology,Water pollution, Phytochemicals and antimicrobial potentials of medicinal plants, Waste water treatment, Infrastructure, Ciencias Ambientales, Marine, Bioremediation and Environmental microbiology, Water and Sanitation, Environmental (soil and water) pollution prevention and monitoring., Salinity, Biological Wastewater Treatment, Freshwater, Meio Ambiente, Separation processes, Boreal forest Archaeology, Water, Sanitation, and Hygiene, Soil and Water Conservation Engineering, Biomonitoring, Medio Ambiente, Ecosystems, Contaminated Sites Remediation, New, Nmr, Natural Resources Management, Gestão Ambiental, Microbial biofilms, Kinetics of Biodegradation/bioremediation, Engenharia Ambiental, Biological Nitrogen Fixation, Biofertilizers, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Pollution, Renewable Energy Technologies, Groundwater Quality, Calidad Del Agua, Contaminación del Agua, Soil Microbiology, Microbial Biotechnology, Bioremediation, Soil Microbiology, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Sanitation, Ingeniería Ambiental, Bacterial Biofilms, Greenhouse Effect, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Solid Wastes, Institutional Sustainability, Sustainability in construction industry, Water and Waste Water Engineering, Conceptualization, Mycorrhizae, Sanitasi, Sharon Process, Partial Nitrification, Biofilters, Biofilm Reactors, Hydraulic Retention Time, Submerged Biofilter, Sanitário, Kinetic Modelling, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Arctic Tundra, Decontamination, Gestión Integrada Del Agua, Membrane Filtration, Particle Size Studies, Virus Filtration, Water Self Purification, Improving, Trace Contaminants of Water Resiurces, Environmental Sciences (Water, Energy and Process Engineering, Microbial Mineralization, Limiting Nutrients, Nutrient Turnover, Aerobic Granular Sludge Technologies, Transboundary Water Issues, Water Management and Climate Change, Environmental Policy and Management, Murray Darling, Mekong and Ganges Rivers, Landfill Processes, Geographic Information Systems (GIS), Water In the City, and Conservacion De Suelo Y Agua
A submerged biologicalaeratedfilter (BAF) partiallyaerated was used to study the removal of lowconcentrations of ammonia nitrogen (0.3 g N/m3 to 30.5 g N/m3) typically found in nutrient enriched river and lake waters, and treated... more
A submerged biologicalaeratedfilter (BAF) partiallyaerated was used to study the removal of lowconcentrations of ammonia nitrogen (0.3 g N/m3 to 30.5 g N/m3) typically found in nutrient enriched river and lake waters, and treated effluents. Four series of experiments were performed with a synthetic wastewater at ammonia loading rates between 6 g N/m3 d and 903 g N/m3 d and C/N ratios from 2 to 20. The results showed that ammonia removal rates reached higher values (172 g N/m3 d to 564 g N/m3 d) for C/N = 2 and lower values (13.6 g N/m3 d to 34.6 g N/m3 d) for C/N = 20. Between 50% and 70% of the ammonia was removed in the upper section of the BAF, where the dissolved oxygen (DO) concentration was over 2.1 g O2/m3 and the biofilm depth ranged from 0.4 to 0.6 mm. At the bottom section of the reactor, simultaneous removal of ammonia and nitrate was observed at the DO concentrations in the range 0.4 g O2/m3 to 0.8 g O2/m3. There was no removal of ammonia nitrogen for loads below 15 g N/m3.d. The results indicate that the removal of nitrogen in partiallyaerated BAF may not only be explained by the conventional mechanisms of nitrification/denitrification.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 116 moreGeology, Hydrogeology, Environmental Education, Climate Change, Water, Hydrology, Hydraulics, International Development, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Energy, Bioenergy, Process Modeling and Simulation, Water and wastewater treatment, Bioremediation, Water Purification, Water Engineering, Environmental Management, Corporate Sustainability, Water Treatment, Wastewater Treatment, Energy and Environment, Waste Management, Sustainable Water Resources Management, Soil and Water Engineering, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Nitrogen Cycle, Water Resources engineering, Watershed Hydrology, Water Pollution, Solid Waste Management, Water Resources Management, Modelling Climate Change Impacts on Water Resources, Water Resources (Environment), Environmental Pollution, Industrial wastewater Treatment, Biological Engineering, Hydraulic and Hydrology, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Earth and Environmental Sciences, Water Management, Planning, Biological Sciences, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Educación Ambiental, Nitrogen Fixation, Water Supply, Wastewater, Derecho Ambiental, Water and Wastewater, Desenvolvimento Regional e Meio Ambiente, Watershed Management, Waste water treatment, Ciencias Ambientales, Bioremediation and Environmental microbiology, Water and Sanitation, Salinity, Biological Wastewater Treatment, Meio Ambiente, Water, Sanitation, and Hygiene, Ambiente, Medio Ambiente, Water Supply and Sanitary Engineering, Gestão Ambiental, civil Engineer, Biological Nitrogen Fixation, Biofertilizers, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Groundwater Quality, Civil Engineerig, Bioremediation of heavy metal contaminated soil, Soil Microbiology, Ingeniería Sanitaria, Sanitation, Ingeniería Ambiental, Greenhouse Effect, Engenharia Civil, Bioprocessing, Procesos De Bioremediacion, CHEMICAL ENGINNERING, Civil Enginering, Chemical Engineer, Water Supply and Sanitation, Institutional Sustainability, Sustainability in construction industry, Water and Waste Water Engineering, Mycorrhizae, Ingenieria Sanitaria, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Sanitasi, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Membrane Filtration, Particle Size Studies, Virus Filtration, Bioremediaion, Geographic Information Systems (GIS), Chemical Enggineering, Biological Systems Engineering, Civil Engg, Chemical and Biomolecular/Biological Engineering, and Bioremediation & Composting
Resultados de uma pesquisa mostram que os resíduos de ETAs podem ser reutilizados em estado bruto para a remoção de Cr, Cu e Zn, diante de tempos de contato inferiores a 30 minutos. A presença de carvão ativado residual, alumino-silicato... more
Resultados de uma pesquisa mostram que os resíduos de ETAs podem ser reutilizados em estado bruto para a remoção de Cr, Cu e Zn, diante de tempos de contato inferiores a 30 minutos. A presença de carvão ativado residual, alumino-silicato e óxidos de ferro conferem ao resíduo propriedades de sorção semelhantes às dos zeólitos
Excessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters’ performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h−1,... more
Excessive growth of biomass and retention of solids associated with air bubbles lead to bed clogging, which affects the biofilters’ performance. Two experiments were carried out in a submerged biofilter at the flow velocity of 0.5 m h−1, for an organic loading rate of 51 g C m−3 h−1 and a nitrogen loading rate of 13 g NH4-N m−3 h−1, one with the biofilter not aerated, the other with the biofilter partially aerated. The results showed that the higher head losses occurred in the upper section of the biofilter, where there was a greater biomass development and a higher removal of organic carbon, ammonia and solids, with the maximum allowed head loss being reached in 16 and 8 days. In any case, the steady-state conditions were achieved after 2 days and were interrupted on the tenth day of experiment E1 and on the fifth day of experiment E2. This allowed defining different operating cycles that enabled an average organic removal rate of 12.7 g C m−3 h−1 (27 %) and an average ammonia removal rate of 1.1 g NH4-N m−3 h−1 (9 %) without aeration, and of 35.8 g C m−3 h−1 (76 %) and 6.3 g NH4-N m−3 h−1 (51 %) with aeration. Regardless of the aeration conditions, more than 90 % of TOC and NH4-N removal occurred in the upper section. After the backwashing cycle, the biofilter returned to steady-state conditions in 6 h (without aeration) and 7 h (with aeration).
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 122 moreGeology, Hydrogeology, Climate Change, Water, Hydrology, Hydraulics, International Development, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Energy, Bioenergy, Water and wastewater treatment, Water Engineering, Environmental Management, Corporate Sustainability, Water Treatment, Wastewater Treatment, Fluid flow in porous media, Sustainable Water Resources Management, Soil and Water Engineering, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Nitrogen Cycle, Water Resources engineering, Watershed Hydrology, Water Pollution, Water Resources Management, Water Resources (Environment), Environmental Pollution, Industrial wastewater Treatment, Biological Engineering, Hydraulic and Hydrology, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Water Management, Planning, Biological Sciences, Water Policy, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Educación Ambiental, Educação Ambiental, Water Supply, Wastewater, Water and Wastewater, Desenvolvimento Regional e Meio Ambiente, Watershed Management, Waste water treatment, Ciencias Ambientales, Water and Innovation, Water and Sanitation, Salinity, Biological Wastewater Treatment, Meio Ambiente, Water, Sanitation, and Hygiene, Ambiente, Medio Ambiente, Water Supply and Sanitary Engineering, Adsorption and wastewater treatment, Natural Resources Management, civil Engineer, Engenharia Ambiental, Biological Nitrogen Fixation, Biofertilizers, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Wastewater Engineering, Groundwater Quality, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Soil Microbiology, Chemical Engineering Process Design, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Ingeniería Sanitaria, Sanitation, Ingeniería Ambiental, Chemical and Environmental Engineering, Greenhouse Effect, Engenharia Civil, Bioprocessing, Chemical Engeneering, CHEMICAL ENGINNERING, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Chemical Engineer, Water Supply and Sanitation, Institutional Sustainability, Sustainability in construction industry, Chemical Eng, Water and Waste Water Engineering, Mycorrhizae, Ingenieria Sanitaria, Educação Ambiental, Meio Ambiente, Desenvolvimento Sustentável, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Sanitasi, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Transboundary Water Issues, Water Management and Climate Change, Environmental Policy and Management, Murray Darling, Mekong and Ganges Rivers, Geographic Information Systems (GIS), Chemical Enggineering, Conservacion De Suelo Y Agua, Biological Systems Engineering, Civil Engg, Engenharia Sanitária e Ambiental, and Chemical and Biomolecular/Biological Engineering
The evaluation of the dispersion in vegetated beds may allow indentifying mechanisms that affect the transport and reaction of solutes, namely organic and nitrogen compounds. A set of non-reactive tracer experiments (slag injection) was... more
The evaluation of the dispersion in vegetated beds may allow indentifying mechanisms that affect the transport and reaction of solutes, namely organic and nitrogen compounds. A set of non-reactive tracer experiments (slag injection) was performed in a vegetated bed (a mesocosm with a LECA-based substratum and colonized with Phragmites australis) used for the removal of organic and nitrogen pollutant loads. Loads of approximately 300 mg COD/L and 30 mg NH4-N/L and a hydraulic loading rate of 3.5 cm/d were used. The results showed a delay in all the residence time distribution (RTD) curves and a variation in the dimensionless residence time (μ(m,θ)) of the E(θ) curves, which means that the mass centre of the impulse was late relatively to the expected one. A strong dispersion and tracer retention (due to the presence of stagnated areas and internal recirculation) was observed, especially in the first 33 cm of the bed, which seems to have been related to the presence of complex clusters of roots, solid material, biofilm and LECA particles. An analytical solution of the Multiple-Tanks-in-Series (MTS) model well represents the RTD curves obtained in the tracer experiments. The detected dispersion and dead volume ratios (7% to 12%) did not affect the performance of the bed, which presented mean removal efficiencies of 85% and 60.4% for COD and NH4-N, respectively.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 50 moreHydrodynamics (Physics), Water, Computational Fluid Dynamics, Fluid Mechanics, Hydraulics, International Development, Biochemical Engineering, Water quality, Diffusion of Innovations, Energy, Bioenergy, Combustion, Water and wastewater treatment, Bioremediation, Water Engineering, Multiphase Flow, Heat Transfer, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Water Treatment, Wastewater Treatment, Large Eddy Simulation, Direct Numerical Simulation, Aerodynamics, Fluid flow in porous media, Biofluids, Fluid Dynamics, Environmental Sustainability, Water Pollution, Bioremediation of wastewater, Biofuels, Multiphase flows, Transport Phenomena in Porous Media, Turbulence modeling, Water Supply and Sanitary Engineering, Turbomachinery, Groundwater Quality, Greenhouse Effect, Bioprocessing, Institutional Sustainability, Sustainability in construction industry, Vegetated Beds, Aggreggates, Bioproducts, Biomass Processing, LES and DNS, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, and Numerical and Experimental Methods in Fluid Dynamics
Similarly to most of Mediterranean EU member states, Portugal regularly experience severe water supply and demand imbalances, particularly in the summer months. Tourism is a very important economic activity in Portugal and is pushing... more
Similarly to most of Mediterranean EU member states, Portugal regularly experience severe water supply and demand imbalances, particularly in the summer months.
Tourism is a very important economic activity in Portugal and is pushing water demand particularly in regions suffering occasional water deficit, like the southern half part of Portugal mainland. Golf courses are an important tourist factor contributing to water demand rising. A number of golf courses are installed in tourist areas and need high amount of water for irrigation.
Water reuse is a very important management strategy in situations of water scarcity. Portugal badly needs to include treated wastewater as a dependable resource in the nation water resources management. Sustainable water reuse requires technical guidelines to ensure the public health and environmental protection but the economic sustainability is crucial for the success of water reuse projects as a strategy of water conservation. This paper briefly presents Portuguese guidelines on water reuse focusing mainly on the aspects to be taken into account in the assessment of the economic viability of water reuse projects, such as the model of tariff structure, the costs to internalise, share of costs among users and recovery of investment costs.
Tourism is a very important economic activity in Portugal and is pushing water demand particularly in regions suffering occasional water deficit, like the southern half part of Portugal mainland. Golf courses are an important tourist factor contributing to water demand rising. A number of golf courses are installed in tourist areas and need high amount of water for irrigation.
Water reuse is a very important management strategy in situations of water scarcity. Portugal badly needs to include treated wastewater as a dependable resource in the nation water resources management. Sustainable water reuse requires technical guidelines to ensure the public health and environmental protection but the economic sustainability is crucial for the success of water reuse projects as a strategy of water conservation. This paper briefly presents Portuguese guidelines on water reuse focusing mainly on the aspects to be taken into account in the assessment of the economic viability of water reuse projects, such as the model of tariff structure, the costs to internalise, share of costs among users and recovery of investment costs.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Environmental Science, and 97 moreEnvironmental Education, Environmental Law, Environmental microbiology, Climate Change, Water, International Development, Environmental Studies, Biochemical Engineering, Water quality, Environmental Planning and Design, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Waste recycling, Environmental Management, Sustainable Urban Environments, Corporate Sustainability, Environmental Policy and Governance, Water Treatment, Wastewater Treatment, Bioprocess/ Biochemical Engineering, Energy and Environment, Waste Management, Water Quality (Engineering), Environmental Chemistry, Environmental Sustainability, Water Pollution, Environmental Pollution, Earth and Environmental Sciences, Biofuels, Educación Ambiental, Educação Ambiental, Saneamiento Ambiental, Tratamiento de aguas, Ciencias Ambientales, Water and Sanitation, Salinity, IMPACTO AMBIENTAL, Manual de Construcción de Reservorios de Agua de Lluvia, Water Supply and Sanitary Engineering, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Biological Nitrogen Fixation, Biofertilizers, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Pollution, Groundwater Quality, Calidad De Agua, Indices de calidad de agua, Civil Engineerig, Water Recycling, Calidad Del Agua, Contaminación del Agua, Soil Microbiology, Agua, Ingeniería Sanitaria, Sanitation, Ingeniería Ambiental, Greenhouse Effect, Engenharia Civil, Bioprocessing, CHEMICAL ENGINNERING, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Tratamiento De Aguas Residuales, Civil Enginering, Chemical Engineer, Institutional Sustainability, Sustainability in construction industry, Gestión Del Agua, Mycorrhizae, Ingenieria Sanitaria, Low Cost Adsorbent, Civil and Environmental Engineering, Sanitasi, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Adsorbent, Dye Removal, Water Pollution Controll, Reclaimed Effluent, Effluent Reclamation, Effluent Polishing, Anaerobic Ponds, Rock Filter, Low Cost Treatment, Effluent Irrigation, Sanitary and Environmental Engineering, Chemical Enggineering, Conservacion De Suelo Y Agua, Civil Engg, and Engenharia Sanitária e Ambiental
The WTP are responsible for the production of drinking water to be consumed by the population, which generates social benefits, however, as in any manufacturing industry, waste is generated and there is the need to dispose them properly... more
The WTP are responsible for the production of drinking water to be consumed by the population, which generates social benefits, however, as in any manufacturing industry, waste is generated and there is the need to dispose them properly without harming the environment. The solid waste management included waste destination and for this stage is necessary to know the waste characteristics in order to define the best treatment and disposal. This study aimed to characterize the WTPS produced by a WTP in the state of Goiás, Brazil, that employs in their treatment the coagulant aluminum sulfate. Physico-chemical analyses and structural properties were verified, showing that the residue
consists of clay (mainly the mineral kaolinite and halloysite), silt and sand. The residue was determined as not plastic. The EDS analysis detected the presence of aluminum, which is related to the phosphorus removal in water and sediment, which facilitates their reuse in the wastewater treatment.
As ETAs são responsáveis pela produção de água potável a ser consumida pela população, o que gera benefícios sociais, porém, como em toda indústria de transformação, resíduos são gerados e há a necessidade de dispô-los adequadamente sem prejudicar o meio ambiente. Quando se trata do gerenciamento de resíduos sólidos, e aí está incluído a sua destinação, é necessário conhecer as suas características a fim de se definir pelo melhor tratamento e disposição. Com base nisso, este trabalho teve por objetivo caracterizar o resíduo da ETA, localizada no estado de Goiás, Brasil, que emprega em seu tratamento o coagulante sulfato de alumínio. Foram realizadas análises físico-químicas e estruturais, sendo possível verificar que o resíduo é constituído por argila (incluindo principalmente os minerais caulinita e haloisita), silte e areia. O resíduo foi determinado como não plástico. Por análise EDS foi detectada a presença de alumínio, que está relacionado à remoção de fósforo em água e sedimentos, o que favorece a sua reutilização no tratamento de águas residuais.
consists of clay (mainly the mineral kaolinite and halloysite), silt and sand. The residue was determined as not plastic. The EDS analysis detected the presence of aluminum, which is related to the phosphorus removal in water and sediment, which facilitates their reuse in the wastewater treatment.
As ETAs são responsáveis pela produção de água potável a ser consumida pela população, o que gera benefícios sociais, porém, como em toda indústria de transformação, resíduos são gerados e há a necessidade de dispô-los adequadamente sem prejudicar o meio ambiente. Quando se trata do gerenciamento de resíduos sólidos, e aí está incluído a sua destinação, é necessário conhecer as suas características a fim de se definir pelo melhor tratamento e disposição. Com base nisso, este trabalho teve por objetivo caracterizar o resíduo da ETA, localizada no estado de Goiás, Brasil, que emprega em seu tratamento o coagulante sulfato de alumínio. Foram realizadas análises físico-químicas e estruturais, sendo possível verificar que o resíduo é constituído por argila (incluindo principalmente os minerais caulinita e haloisita), silte e areia. O resíduo foi determinado como não plástico. Por análise EDS foi detectada a presença de alumínio, que está relacionado à remoção de fósforo em água e sedimentos, o que favorece a sua reutilização no tratamento de águas residuais.
Alkali-activated binders can be obtained using several sources of alumino-silicate materials, from calcinated clays, like kaolin, to industrial by-products, such as fly ash and, more recently, to calcinated waste mud from mining... more
Alkali-activated binders can be obtained using several sources of alumino-silicate materials, from calcinated clays, like kaolin, to industrial by-products, such as fly ash and, more recently, to calcinated waste mud from mining activities. The technology to obtain alkali-activated binders, also designated as geopolymers, is gaining increasing interest, since, in some cases, the properties of geopolymeric materials
are superior to other existing cementitious systems. The research presented in this paper intends to deepen
the knowledge regarding the properties of geopolymeric materials obtained using tungsten mining waste mud, particularly to study its behaviour after being immersed in water. However, in the current work, focus is given to follow compressive strength results in partially alkali-activated samples immersed in water, during different curing periods of time. Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy analysis (FTIR) were also utilised to investigate changes in the microstructure at different conditions of water immersion. A significant decrease in compressive strength occurring after 24 h of immersion in water was found out, of specific partially alkali-activated materials, despite of its initial high compressive strength after 35 days curing, at different temperatures.
are superior to other existing cementitious systems. The research presented in this paper intends to deepen
the knowledge regarding the properties of geopolymeric materials obtained using tungsten mining waste mud, particularly to study its behaviour after being immersed in water. However, in the current work, focus is given to follow compressive strength results in partially alkali-activated samples immersed in water, during different curing periods of time. Energy Dispersive X-ray Spectroscopy (EDS), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy analysis (FTIR) were also utilised to investigate changes in the microstructure at different conditions of water immersion. A significant decrease in compressive strength occurring after 24 h of immersion in water was found out, of specific partially alkali-activated materials, despite of its initial high compressive strength after 35 days curing, at different temperatures.
Research Interests: Engineering, Environmental Engineering, Materials Engineering, Mechanical Engineering, Chemical Engineering, and 120 moreCivil Engineering, Environmental Science, Materials Science, Environmental Education, Science Communication, Aquatic Ecology, Water, Conservation Biology, International Development, Composite Materials and Structures, Renewable Energy, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Energy, Bioenergy, Recycling, Water and wastewater treatment, Bioremediation, Water Engineering, Waste, Municipal Solid Waste Management, Waste recycling, Environmental Sanitation, Corporate Sustainability, Ecology, Water Treatment, Wastewater Treatment, Materials, Materials Characterisation, Gasification, Filtration, Waste Management, Mineral Processing, Sustainable Water Resources Management, Solar, Biodiversity, New Materials in design, Water Reuse, Environmental Sustainability, Human-wildlife conflicts, Water Pollution, Solid Waste Management, Materials Science and Engineering, Energy efficiency, Solid waste management and treatment, Integrated Water Resources Management, Bioremediation of wastewater, Geopolymer Concrete, Direito Ambiental, Civil Society, Biofuels, Zeolites, Educación Ambiental, Educação Ambiental, Desenvolvimento Regional e Meio Ambiente, Ciencias Ambientales, Quimica ambiental, Water and Sanitation, IMPACTO AMBIENTAL, Meio Ambiente, Durability of Concrete, Waste to Energy, Water, Sanitation, and Hygiene, Ambient Media, Ambiente, Medio Ambiente, Water Supply and Sanitary Engineering, Gestão Ambiental, civil Engineer, Built Heritage, Cultural Heritage, Urban Art, Urban Design, Urban Regeneration Through Art, Urban Light, Urban Development, Rehabilitation, Reuse of Industrial Buildings., Mines, Engenharia Ambiental, Aggregates, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Ambiental, Groundwater Quality, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Experimental Study on Geopolymer Concrete, Materiais, Rural water supply, Environmental Sanitation and Hygiene Education, Sanitation, Ingeniería Ambiental, Objetivos sanitarios 2010-2020, Greenhouse Effect, Engenharia De Materiais, Engenharia Civil, Bioprocessing, Geopolymer Mortar, Water Filtration, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Water Supply and Sanitation, Institutional Sustainability, Sustainability in construction industry, Ciência e Engenharia de Materiais, Ingenieria Sanitaria, Engenharia do Ambiente, SANITATION AND ENVIRONMENT, Civil and Environmental Engineering, Sanitasi, Cement and Concrete Materials, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Membrane Filtration, Utilization of cementitious industrial waste products (slag, fly ash, silica fume) and natural pozzolans, Service life of concrete structures, Processamento De Materiais, Conservacion De Suelo Y Agua, and Engenharia Sanitária e Ambiental
Artificial aggregates produced from mine waste geopolymeric binders were studied as a potential substrate for fixed-film wastewater-treatment processes (biofilm reactors). Waste geopolymeric artificial aggregates (WGA) of 2–3 cm in size... more
Artificial aggregates produced from mine waste geopolymeric binders were studied as a potential substrate for fixed-film
wastewater-treatment processes (biofilm reactors). Waste geopolymeric artificial aggregates (WGA) of 2–3 cm in size were produced using geopolymeric mine waste mud as a precursor and both sodium silicate and sodium hydroxide as alkaline activators. Seven mixtures were produced with different atomic ratios of sodium silicate to sodium hydroxide (S/H) and of precursor (waste mud) to sodium silicate (P/S), using curing temperatures of 20°C and 130°C, for a total of 112 samples. Structural stability and pH variation after immersion in water were observed over an 18-week period. The results showed that the initial water pH decreased with the increase of the curing time, taking between 17 and 42 days to reach pH 8. The mixture cured at 20°C for 28 days appears to be suitable for use as a substrate for biofilm reactors because the initial water pH was one of the lowest (approximately pH 10), and the time necessary to stabilize it to approximately pH 8 was only 17 days.
wastewater-treatment processes (biofilm reactors). Waste geopolymeric artificial aggregates (WGA) of 2–3 cm in size were produced using geopolymeric mine waste mud as a precursor and both sodium silicate and sodium hydroxide as alkaline activators. Seven mixtures were produced with different atomic ratios of sodium silicate to sodium hydroxide (S/H) and of precursor (waste mud) to sodium silicate (P/S), using curing temperatures of 20°C and 130°C, for a total of 112 samples. Structural stability and pH variation after immersion in water were observed over an 18-week period. The results showed that the initial water pH decreased with the increase of the curing time, taking between 17 and 42 days to reach pH 8. The mixture cured at 20°C for 28 days appears to be suitable for use as a substrate for biofilm reactors because the initial water pH was one of the lowest (approximately pH 10), and the time necessary to stabilize it to approximately pH 8 was only 17 days.
Research Interests: Engineering, Environmental Engineering, Materials Engineering, Chemical Engineering, Civil Engineering, and 121 moreBioinformatics, Bioinformatics, Landscape Ecology, Environmental Science, Materials Science, Immunology, Immunology, Aquatic Ecology, Water, Molecular Biology, Molecular Biology, International Development, Composite Materials and Structures, Landscape Architecture, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Biotechnology, Energy, Bioenergy, Recycling, Water and wastewater treatment, Bioremediation, Aquatic Toxicology, Waste, Municipal Solid Waste Management, Waste recycling, Environmental Sanitation, Corporate Sustainability, Water Treatment, Wastewater Treatment, Materials, Environmental Impact Assessment, Filtration, Energy and Environment, Waste Management, Sustainable Water Resources Management, Industrial Biotechnology, New Materials in design, Landscape Urbanism, Water Reuse, Molecular Biochemistry, Environmental Sustainability, Water Pollution, Solid Waste Management, Aquaculture, Materials Science and Engineering, Industrial wastewater Treatment, Environmental Biotechnology, Bioremediation of wastewater, Geopolymer Concrete, Genetic Engineering, Civil Society, Biofuels, Zeolites, Educación Ambiental, Educação Ambiental, Derecho Ambiental, Saneamiento Ambiental, Tratamiento de aguas, Ciencias Ambientales, Water and Sanitation, Civil Engeenering, Medical Biotechnology, Meio Ambiente, Durability of Concrete, Water, Sanitation, and Hygiene, Medio Ambiente, Water Supply and Sanitary Engineering, ELISA, Gestão Ambiental, Management of Civil Engineering Projects, civil Engineer, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Civil Engneering, Groundwater Quality, Solid Waste Generation and Management, Water and Wastewater Treatment, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Agua, Building and Civil Engineering, Civil/Structural Engineering, Sanitation, Ingeniería Ambiental, Geopolymers, Civil Engeneering, Objetivos sanitarios 2010-2020, Greenhouse Effect, Engenharia Civil, Bioprocessing, Water Filtration, Civil Engineeering, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Water Supply and Sanitation, Waster Quality, Civil & Environmental Engineering, Institutional Sustainability, Civil Enginnering, Sustainability in construction industry, Civil and Construction Engineering, Aggreggates, Civil Eng, Civil and Environmental Engineering, Sanitasi, Cement and Concrete Materials, Civil Engineering and Architecture, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Utilization of cementitious industrial waste products (slag, fly ash, silica fume) and natural pozzolans, Service life of concrete structures, Conservacion De Suelo Y Agua, Clean and Sanitize Premise, and Civil Engg
This study investigated the effects of reed and willow on bioremediation of landfill leachate in comparison with an unplanted control by measuring redox potential levels in the rhizosphere of microcosm systems in a greenhouse. Plants had... more
This study investigated the effects of reed and willow on bioremediation of landfill leachate in comparison with an unplanted control by measuring redox potential levels in the rhizosphere of microcosm systems in a greenhouse. Plants had a significant influence on redox potential relative to the plant-less system. Redox potential in the reed rhizosphere was anoxic (mean −102 ± 85 mV), but it was the least negative, being significantly higher than in the willow (mean −286 ± 118 mV), which had the lowest Eh. Redox potential fluctuated significantly in the willow rhizosphere during daylight hours, with large decreases in the morning. Levels of NH4+ decreased significantly in the first day of the experiment and remained at similar low levels in all three variants for the next four weeks of the experiment. Following this removal of ammonia significant peaks in NO2− occurred in the control and reed tanks on the 1st day, and again on 14th day in the control tank up to 13 mg/dm3. In the willow tank there was also one significant peak of NO2− in the first week, but only up to 0.5 mg/dm3. Significant accumulation, within 21 days of NO3− in all variants was observed, but in tanks with reed and willow the concentration of NO3− remained significantly lower (<4 mg/dm3) than in the unplanted tank (∼35 mg/dm3). Final levels of total-nitrogen, nitrate and chemical oxygen demand were considerably lower in the reed and willow tank than in the unplanted tank.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Botany, and 118 moreLandscape Ecology, Environmental Science, Soil Science, Environmental Education, Biogeochemistry, Aquatic Ecology, Climate Change, Water, Wetlands, Conservation Biology, Hydrology, Hydraulics, International Development, Landscape Architecture, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Tropical Ecology, Restoration Ecology, Biotechnology, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Water Engineering, Environmental Management, Biology, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Ecology, Water Treatment, Wastewater Treatment, Wetland Ecology, Vegetation Ecology, Energy and Environment, Waste Management, Sustainable Water Resources Management, Urban Wetlands, Forest Ecology, New Materials in design, Landscape Urbanism, Water Resources (Engineering), Environmental Sustainability, Nitrogen Cycle, Water Resources engineering, Water Pollution, Solid Waste Management, Aquaculture, Water Resources Management, Water Resources (Environment), Environmental Pollution, Wetland Management, Integrated Water Resources Management, Bioremediation of wastewater, Earth and Environmental Sciences, Phosphorus, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Zeolites, Science for Conservation and Restoration of Cultural Heritage, Biodiversity Research, global Climate change, Water Supply, Saneamiento Ambiental, Tratamiento de aguas, Water and Sanitation, Salinity, Ecologia, Boreal forest Archaeology, Water, Sanitation, and Hygiene, Manual de Construcción de Reservorios de Agua de Lluvia, Contaminated Sites Remediation, Water Supply and Sanitary Engineering, Nmr, Kinetics of Biodegradation/bioremediation, Biological Nitrogen Fixation, Biofertilizers, Waste Water Treatment with Constructed Wetlands, Groundwater Quality, Constructed Wetlands, Calidad De Agua, Calidad Del Agua, Contaminación del Agua, Soil Microbiology, Agua, Ingeniería Sanitaria, Native Plants, Sanitation, Sustainable Landscapes, Greenhouse Effect, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Institutional Sustainability, Sustainability in construction industry, Sustainable Developement, Water and Waste Water Engineering, Waste minimisation, Landscape and Land-use-history, Mycorrhizae, Bioproducts, Biomass Processing, Alpine and Arctic Research, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Arctic Tundra, Gestión Integrada Del Agua, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Landfilling, Microbial Mineralization, Limiting Nutrients, Nutrient Turnover, Landfill Processes, and Conservacion De Suelo Y Agua
Mining and quarrying activities in Europe generate approximately 55% of total industrial wastes, according to a recent Eurostat report. Most of these wastes are directly dumped on land or deposited in landfill sites. The first solution... more
Mining and quarrying activities in Europe generate approximately 55% of total industrial wastes, according to a recent Eurostat report. Most of these wastes are directly dumped on land or deposited in landfill sites. The first solution may lead to negative environmental impacts on land (removal of vegetation, deforestation, land slope changes and increased risk of erosion), water (pollutant transport through surface runoff, soil infiltration and contamination of water resources), may lead to the contamination of agricultural goods and may impose risks on human health. In Portugal, about 20% of industrial waste produced originates from mines and quarries, particularly from Panasqueira mining, one of the largest tungsten mines in the world. Currently, Panasqueira mining generates almost 100 tonnes of waste-rock, per day. Such waste-rock have accumulated over a number of years into very large heaps and it is desirable to seek new economic solutions that can contribute towards their reuse. In this context, this work discusses the potential for reuse of waste-rock piles of Panasqueira tungsten mine, which may be a case statement to be followed. The proposed solution described in this paper consists in developing innovative polymer-based composite materials, obtained from non-contaminated waste-rock tailings. Such materials must have suitable properties for technical-artistic value added applications, such as conservation, restoration and/or rehabilitation of historic monuments, sculptures, decorative and architectural intervention, or simply as materials for building revetments.
Research Interests: Engineering, Environmental Engineering, Materials Engineering, Chemical Engineering, Bioinformatics, and 96 moreLandscape Ecology, Environmental Science, Artificial Intelligence, Materials Science, Design, Social Networks, Art, Directing, Architecture, Aquatic Ecology, Animation, Photography, Web Design, Machine Learning, Data Mining, International Development, Composite Materials and Structures, Landscape Architecture, Environmental Studies, Advertising, Biochemical Engineering, Water quality, Graphic Design, Restoration Ecology, Biotechnology, Energy, Bioenergy, Interior Design, Recycling, Bioremediation, Waste, Municipal Solid Waste Management, Waste recycling, Corporate Sustainability, Water Treatment, Wastewater Treatment, Materials, Sculpture, Energy and Environment, Waste Management, Landscape Urbanism, Environmental Sustainability, Artistic Research, Solid Waste Management, Materials Science and Engineering, Visual Arts, Databases, Solid waste management and treatment, Geopolymer Concrete, Fine Arts, Biofuels, Zeolites, Science for Conservation and Restoration of Cultural Heritage, Urban Design, Saneamiento Ambiental, Tratamiento de aguas, Waste water treatment, Clustering, Ecologia, Meio Ambiente, Durability of Concrete, Medio Ambiente, Museum environment, Built Heritage, Cultural Heritage, Urban Art, Urban Design, Urban Regeneration Through Art, Urban Light, Urban Development, Rehabilitation, Reuse of Industrial Buildings., Stage Design, Calidad De Agua, Calidad Del Agua, Contaminación del Agua, Agua, Geopolymers, Greenhouse Effect, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Stone conservation, Tratamiento De Aguas Residuales, Cinema and Television, Institutional Sustainability, Sustainability in construction industry, Architecture and Public Spaces, Digital Imaging Devices, CameraWork, Cement and Concrete Materials, Bioproducts, Biomass Processing, Eco Construction, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Analysis of Pigments on Ancient Artifacts, Restoration and Conservation of Ancient and Historic Buildings and Structures, Consolidation of Structures In Situ, Consolidation of Painted Ancient Stone Surfaces, Utilization of cementitious industrial waste products (slag, fly ash, silica fume) and natural pozzolans, Service life of concrete structures, and Conservacion De Suelo Y Agua
"Abstract A 60 cm-high, 6 cm-diameter, 1 cm-thick ceramic filter with porosity of 0,1μm was the object of this research which aimed to study the removal of color and turbidity from raw water. The device had 0,113 m2 of external surface... more
"Abstract
A 60 cm-high, 6 cm-diameter, 1 cm-thick ceramic filter with porosity of 0,1μm was the object of this research which aimed to study the removal of color and turbidity from raw water. The device had 0,113 m2 of external surface and was installed inside an acrylic column 110 cm high and with inner diameter of 23 cm. This column had a volume of 41,5 L. Raw water was collected from a … where turbidity varied from 2,3 to 2,8 NTU and apparent color from 1,82 to 3,26 PtCo. Three different application rates were applied (1,82, 3,16 e 4,49m3/m2.dia) accomplishing three filtration runs for each one of them. Water samples were collected from influent and effluent of filter each time that head loss raised in 5 cm, until 20 cm of head loss were completed. Results showed 75 to 80 % efficiency in turbidity removal, resulting in values between 0,53 to 0,58 NTU for the last run for each filtration rate applied. In the other hand, system doesn’t show efficiency for the removal of color.
Resumo:
Um filtro cerâmico com porosidade de 0,1μm, 60 cm de altura e 6 cm de diâmetro e 1 cm de espessura foi utilizado para estudar a remoção de cor e turbidez da água bruta. A unidade apresentava 0,113m² de superfície externa e estava montada no interior de uma coluna em acrílico com 100 cm de altura e 23 cm de diâmetro, com volume útil de 41,5 L. A água bruta, utilizada na pesquisa, foi proveniente de uma represa onde os valores de turbidez variaram de 2,3 a 2,8 NTU e cor aparente de 93 e 109 PtCo. Foram empregadas 3 diferentes taxas de aplicação, sendo de 1,82, 3,16 e 4,49m3/m2.dia, onde foram realizadas três carreiras de filtração para cada taxa. A duração de cada carreira de filtração estabilizou em 100, 42 e 26 minutos, respectivamente para cada taxa de aplicação. As amostras de água, utilizadas para verificar sua qualidade, foram coletadas, na entrada e saída do filtro a cada 5 cm de perda de carga até completar 20 cm. Os resultados obtidos demonstraram uma eficiência na remoção de turbidez entre 75 e 80%, resultando valores de entre 0,53 e 0,58 NTU para a última carreira de filtração para cada taxa de aplicação. Em contrapartida o sistema não se mostrou eficiente para remoção de cor aparente ficando entre 27 e 38%, mantendo valores elevados, ou seja, superiores a 62 PtCo, dessa forma o sistema não se mostrou eficiente para a remoção de cor."
A 60 cm-high, 6 cm-diameter, 1 cm-thick ceramic filter with porosity of 0,1μm was the object of this research which aimed to study the removal of color and turbidity from raw water. The device had 0,113 m2 of external surface and was installed inside an acrylic column 110 cm high and with inner diameter of 23 cm. This column had a volume of 41,5 L. Raw water was collected from a … where turbidity varied from 2,3 to 2,8 NTU and apparent color from 1,82 to 3,26 PtCo. Three different application rates were applied (1,82, 3,16 e 4,49m3/m2.dia) accomplishing three filtration runs for each one of them. Water samples were collected from influent and effluent of filter each time that head loss raised in 5 cm, until 20 cm of head loss were completed. Results showed 75 to 80 % efficiency in turbidity removal, resulting in values between 0,53 to 0,58 NTU for the last run for each filtration rate applied. In the other hand, system doesn’t show efficiency for the removal of color.
Resumo:
Um filtro cerâmico com porosidade de 0,1μm, 60 cm de altura e 6 cm de diâmetro e 1 cm de espessura foi utilizado para estudar a remoção de cor e turbidez da água bruta. A unidade apresentava 0,113m² de superfície externa e estava montada no interior de uma coluna em acrílico com 100 cm de altura e 23 cm de diâmetro, com volume útil de 41,5 L. A água bruta, utilizada na pesquisa, foi proveniente de uma represa onde os valores de turbidez variaram de 2,3 a 2,8 NTU e cor aparente de 93 e 109 PtCo. Foram empregadas 3 diferentes taxas de aplicação, sendo de 1,82, 3,16 e 4,49m3/m2.dia, onde foram realizadas três carreiras de filtração para cada taxa. A duração de cada carreira de filtração estabilizou em 100, 42 e 26 minutos, respectivamente para cada taxa de aplicação. As amostras de água, utilizadas para verificar sua qualidade, foram coletadas, na entrada e saída do filtro a cada 5 cm de perda de carga até completar 20 cm. Os resultados obtidos demonstraram uma eficiência na remoção de turbidez entre 75 e 80%, resultando valores de entre 0,53 e 0,58 NTU para a última carreira de filtração para cada taxa de aplicação. Em contrapartida o sistema não se mostrou eficiente para remoção de cor aparente ficando entre 27 e 38%, mantendo valores elevados, ou seja, superiores a 62 PtCo, dessa forma o sistema não se mostrou eficiente para a remoção de cor."
Research Interests:
Three discontinuous batch shallow constructed wetland systems with recirculating subsurface horizontal flow with reed, willow, and without plants were used to assess the removal of nitrogen from landfill leachate in relation to hydraulic... more
Three discontinuous batch shallow constructed wetland systems with recirculating subsurface horizontal flow with reed, willow, and without plants were used to assess the removal of nitrogen from landfill leachate in relation to hydraulic retention time and climatic conditions. In all systems redox potential in the beds increased asymptotically from negative anoxic conditions to +67 (reed bed), −2 (willow bed), and +17 mV (control bed), reaching a plateau in two wk. During the first 24 h after feeding the beds all forms of nitrogen decreased significantly. It has been shown that plants release O2 and Norg which was then hydrolyzed to ammonia. Plant-available radiation significantly (p < 0.05) increased the release of Norg and removal of ammonia after the 9th day of the experiment. Low, and relatively constant concentrations of nitrite and nitrate indicated that denitrification had taken place in the beds.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Landscape Ecology, and 145 moreEnvironmental Science, Geology, Hydrogeology, Environmental Education, Science Communication, Architecture, Aquatic Ecology, Climate Change, Water, Wetlands, Conservation Biology, Hydrology, Hydraulics, International Development, Landscape Architecture, Environmental Studies, Environmental History, Biochemical Engineering, Water quality, Water resources, Restoration Ecology, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Water Engineering, Municipal Solid Waste Management, Waste recycling, Environmental Management, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Ecology, Water Treatment, Wastewater Treatment, Wetland Ecology, Energy and Environment, Waste Management, Sustainable Water Resources Management, Urban Wetlands, Biodiversity, Soil and Water Engineering, Landscape Urbanism, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Human-wildlife conflicts, Nitrogen Cycle, Water Resources engineering, Watershed Hydrology, Water Pollution, Solid Waste Management, Water Resources Management, Water Resources (Environment), Civil Procedure, Environmental Pollution, Nuclear Wastes Management, Wetland Management, Solid waste management and treatment, Industrial wastewater Treatment, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Earth and Environmental Sciences, Civil Society, Planning, Water Cycle, Biological Nutrient Removal, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Science for Conservation and Restoration of Cultural Heritage, Educación Ambiental, Educação Ambiental, Water Supply, Wastewater, Derecho Ambiental, Water and Wastewater, Carbon and Water cycle, Waste water treatment, Ciencias Ambientales, Water and Sanitation, Salinity, Biological Wastewater Treatment, Ecologia, Meio Ambiente, Water, Sanitation, and Hygiene, Water . Evapotranspiration . Penman–Monteith . Simplification . Model, Evapotranspiration, Manual de Construcción de Reservorios de Agua de Lluvia, Medio Ambiente, Contaminated Sites Remediation, Adsorption and wastewater treatment, Subsurface Constructed Wetland, Potential Evapotranspiration, Treatment of petroleum contaminated wastewater using constructed wetlands, Kinetics of Biodegradation/bioremediation, Engenharia Ambiental, Biological Nitrogen Fixation, Biofertilizers, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Waste Water Treatment with Constructed Wetlands, Wastewater Engineering, Groundwater Quality, Constructed Wetlands, Contaminación del Agua, Soil Microbiology, Ingeniería Sanitaria, Native Plants, Sanitation, Ingeniería Ambiental, Evapotranspiration models, Sustainable Landscapes, Objetivos sanitarios 2010-2020, Greenhouse Effect, Bioprocessing, Chemical Engeneering, CHEMICAL ENGINNERING, Chemical Engineer, Water Supply and Sanitation, Institutional Sustainability, Sustainability in construction industry, Sustainable Developement, Water and Waste Water Engineering, Waste minimisation, Mycorrhizae, Evapotranspirasi, Civil and Environmental Engineering, Sanitasi, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Landfilling, Landfill Processes, Geographic Information Systems (GIS), and Chemical Enggineering
This research work evaluates the impact of stormwater infiltration on the removal of organics, solids, nitrogen and phosphorus in a LECA-based horizontal subsurface flow constructed wetland. Stormwater runoff for the period between... more
This research work evaluates the impact of stormwater infiltration on the removal of organics, solids, nitrogen and phosphorus in a LECA-based horizontal subsurface flow constructed wetland. Stormwater runoff for the period between January 2008 and June 2010 (30 months) was estimated for the drainage basin of the Vila Fernando wastewater treatment plant (constructed wetland system) and it was observed proportionality between the increase in surface runoff and the infiltration flow rate that reached the plant. The average stormwater infiltration rate that reached the plant was 67.4 m(3) d(-1) (77% of the influent flow rate into the plant). The 30 month monitoring campaign set up at one of the reed beds showed that stormwater infiltration led to a high variation of the hydraulic loading rate (HLR) throughout the bed, which affected its performance in the removal of organic matter, suspended solids and nitrogen. For a HLR below 20 cm d-1 the removal efficiencies for BOD5, COD and TSS doubled. The removal of nitrogen was too low and was associated with the weak development of nitrifying biofilm and the poor growth of reeds. However, it was observed a good relationship between the applied and removed loads for most of the parameters, which seems to indicate that the organic, solid, nitrogen and phosphorus loading rates influenced the respective removal rates. The use of a bed material with high specific surface area, such as LECA, can only improve the treatment capacity of horizontal subsurface flow systems if the organic and solid loading rates, as well as the HLR, can be effectively controlled.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Landscape Ecology, and 140 moreEnvironmental Science, Geology, Hydrogeology, Environmental Education, Aquatic Ecology, Environmental microbiology, Quality, Water, Wetlands, Hydrology, Hydraulics, International Development, Landscape Architecture, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Ecotoxicology, Catalysis, Restoration Ecology, Biotechnology, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Process Control, Water Engineering, Environmental Management, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Water Treatment, Wastewater Treatment, Wetland Ecology, Rivers, Energy and Environment, Waste Management, Sustainable Water Resources Management, Urban Wetlands, New Materials in design, Landscape Urbanism, Stormwater, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Water Resources engineering, Water Pollution, Biological Control, Materials Science and Engineering, Water Resources Management, Water Resources (Environment), Wetland Management, Industrial wastewater Treatment, Biological Engineering, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Planning, Biological Sciences, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Lakes, Biofuels, Zeolites, Science for Conservation and Restoration of Cultural Heritage, Educación Ambiental, Educação Ambiental, Water Supply, Derecho Ambiental, Microbiology,Water pollution, Phytochemicals and antimicrobial potentials of medicinal plants, Marine, Water and Sanitation, Biological Wastewater Treatment, Ecologia, Freshwater, Meio Ambiente, Separation processes, Water, Sanitation, and Hygiene, Manual de Construcción de Reservorios de Agua de Lluvia, Biomonitoring, Medio Ambiente, Ecosystems, New, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Pollution, Environmental Science & Engineering, Renewable Energy Technologies, Waste Water Treatment with Constructed Wetlands, Groundwater Quality, Constructed Wetlands, Civil Engineerig, Contaminación del Agua, Ingeniería Sanitaria, Native Plants, Sanitation, Ingeniería Ambiental, Chemical and Environmental Engineering, Sustainable Landscapes, Objetivos sanitarios 2010-2020, Greenhouse Effect, Engenharia Civil, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Chemical Engineer, Water Supply and Sanitation, Civil & Environmental Engineering, Institutional Sustainability, Sustainability in construction industry, Water and Waste Water Engineering, Conceptualization, Engenharia do Ambiente, Civil and Environmental Engineering, Sanitasi, Sanitário, Kinetic Modelling, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Decontamination, Gestión Integrada Del Agua, Water Self Purification, Improving, Trace Contaminants of Water Resiurces, Energy and Process Engineering, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Geographic Information Systems (GIS), Geo Environmental Engineering, Chemical Enggineering, Environmental Science and Engineering, Biological Systems Engineering, and Engenharia Sanitária e Ambiental
In this work was evaluated the development of crops with different dosages of WTS (0%, 18.75%, 37.50%, 56.25%, 75%). The sludge used in the study was collected in the WTP located in Goiânia-Goiás-Brasil, which used Al2(SO4)3 as a primary... more
In this work was evaluated the development of crops with different dosages of WTS (0%, 18.75%, 37.50%, 56.25%, 75%). The sludge used in the study was collected in the WTP located in Goiânia-Goiás-Brasil, which used Al2(SO4)3 as a primary coagulant. For the study was used five treatments (T1: 25% substrate, 75% land, 0% sludge, T2: 25% substrate, land 56.25%, 18.75% sludge, T3: 25% substrate, 37,5 % land, 37,5% sludge, T4: 25% substrate, land 18.75%, 56.25% sludge, T5: 25% substrate, 0% land, 75% sludge) for four species of native plants occurring in cerrado biome. Was adopted the completely randomized design with four repetitions, totaling 400 plants. The data collections were performed at 30, 60, 90, 120 and 150 days after planting. Parameters such as the collar diameter, height, weight and chlorophyll were evaluated. The morphological parameters showed little variation among treatments. Regarding the quality, some species showed good growth when were subjected to treatment with 56.25% of sludge. It was found that the allocation of the WTS nursery could be an alternative available and also an economic advantage to commercial nurseries. It is expected not only to encourage the commercial use of residue in crops that require specific concentrations of metals such as aluminum, abundant in the sludge, the greater concern is the environmental and ecological nature, as tons of waste are discarded altogether, causing pollution and occupation of space unnecessarily.
The study was conducted using bench tests using Jart in order to evaluate the efficacy of three coagulants used in water treatment plants. Samples of raw water from the spring that supplies the Water Treatment Station Jaime Camara,... more
The study was conducted using bench tests using Jart in order to evaluate the efficacy of three coagulants used in water treatment plants. Samples of raw water from the spring that supplies the Water Treatment Station Jaime Camara, located in Goiânia, Goiás, Brazil. The tests were performed at different temperatures, and applied different doses of aluminum sulfate, ferric chloride and ferric sulphate. Was studied by pH, the removal of turbidity and apparent color. The parameters have been interfered with in relation to dosage, type of coagulant and temperature, which demonstrates the need for monitoring the water temperature for adequacy of dosage of these chemicals in a Water Treatment Plant.
O estudo foi desenvolvido empregando ensaios em bancada por meio de Jarteste de modo a avaliar a eficiência de três coagulantes utilizados em estações de tratamento de água. Foram utilizadas amostras de água bruta, do manancial que abastece a Estação de Tratamento de Água Jaime Câmara, localizada na cidade de Goiânia, Goiás, Brasil. Os ensaios foram realizados em diferentes temperaturas, e aplicadas dosagens distintas de Sulfato de Alumínio, Cloreto Férrico e Sulfato Férrico. Foi estudada a variação do pH, a remoção da turbidez e da cor aparente. Os parâmetros avaliados sofreram interferência em relação à dosagem, aos tipos de coagulantes e à temperatura, o que comprova a necessidade de monitoramento da temperatura da água para adequação da dosagem desses compostos químicos em uma Estação de Tratamento de Água.
O estudo foi desenvolvido empregando ensaios em bancada por meio de Jarteste de modo a avaliar a eficiência de três coagulantes utilizados em estações de tratamento de água. Foram utilizadas amostras de água bruta, do manancial que abastece a Estação de Tratamento de Água Jaime Câmara, localizada na cidade de Goiânia, Goiás, Brasil. Os ensaios foram realizados em diferentes temperaturas, e aplicadas dosagens distintas de Sulfato de Alumínio, Cloreto Férrico e Sulfato Férrico. Foi estudada a variação do pH, a remoção da turbidez e da cor aparente. Os parâmetros avaliados sofreram interferência em relação à dosagem, aos tipos de coagulantes e à temperatura, o que comprova a necessidade de monitoramento da temperatura da água para adequação da dosagem desses compostos químicos em uma Estação de Tratamento de Água.
The study was conducted using bench tests using Jart in order to evaluate the efficacy of three coagulants used in water treatment plants. Samples of raw water from the spring that supplies the Water Treatment Station Jaime Camara,... more
The study was conducted using bench tests using Jart in order to evaluate the efficacy of three coagulants used in water treatment plants. Samples of raw water from the spring that supplies the Water Treatment Station Jaime Camara, located in Goiânia, Goiás, Brazil. The tests were performed at different temperatures, and applied different doses of aluminum sulfate, ferric chloride and ferric sulphate. Was studied by pH, the removal of turbidity and apparent color. The parameters have been interfered with in relation to dosage, type of coagulant and temperature, which demonstrates the need for monitoring the water temperature for adequacy of dosage of these chemicals in a Water Treatment Plant.
Keywords: efficiency of the coagulants; conditions of
coagulation; flocculation; jartest.
Keywords: efficiency of the coagulants; conditions of
coagulation; flocculation; jartest.
Reclaimed water from small wastewater treatment facilities in the rural areas of the Beira Interior region (Portugal) may constitute an alternative water source for aquifer recharge. A 21-month monitoring period in a constructed wetland... more
Reclaimed water from small wastewater treatment facilities in the rural areas of the Beira Interior region (Portugal) may constitute an alternative water source for aquifer recharge. A 21-month monitoring period in a constructed wetland treatment system has shown that 21,500 m3 year−1 of treated wastewater
(reclaimed water) could be used for aquifer recharge. A GIS-based multi-criteria analysis was performed, combining ten thematic maps and economic, environmental and technical criteria, in order to produce a suitability map for the location of sites for reclaimed water infiltration. The areas chosen for aquifer
recharge with infiltration basins are mainly composed of anthrosol with more than 1 m deep and fine sand texture, which allows an average infiltration velocity of up to 1 m d−1. These characteristics will provide a final polishing treatment of the reclaimed water after infiltration (soil aquifer treatment (SAT)),
suitable for the removal of the residual load (trace organics, nutrients, heavy metals and pathogens).
The risk of groundwater contamination is low since the water table in the anthrosol areas ranges from 10 m to 50 m. On the other hand, these depths allow a guaranteed unsaturated area suitable for SAT. An area of 13,944 ha was selected for study, but only 1607 ha are suitable for reclaimed water infiltration.
Approximately 1280 m2 were considered enough to set up 4 infiltration basins to work in flooding and
drying cycles.
(reclaimed water) could be used for aquifer recharge. A GIS-based multi-criteria analysis was performed, combining ten thematic maps and economic, environmental and technical criteria, in order to produce a suitability map for the location of sites for reclaimed water infiltration. The areas chosen for aquifer
recharge with infiltration basins are mainly composed of anthrosol with more than 1 m deep and fine sand texture, which allows an average infiltration velocity of up to 1 m d−1. These characteristics will provide a final polishing treatment of the reclaimed water after infiltration (soil aquifer treatment (SAT)),
suitable for the removal of the residual load (trace organics, nutrients, heavy metals and pathogens).
The risk of groundwater contamination is low since the water table in the anthrosol areas ranges from 10 m to 50 m. On the other hand, these depths allow a guaranteed unsaturated area suitable for SAT. An area of 13,944 ha was selected for study, but only 1607 ha are suitable for reclaimed water infiltration.
Approximately 1280 m2 were considered enough to set up 4 infiltration basins to work in flooding and
drying cycles.
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Civil Engineering, Landscape Ecology, and 118 moreEnvironmental Science, Geology, Hydrogeology, Environmental Education, Aquatic Ecology, Water, Wetlands, Hydrology, Hydraulics, Landscape Architecture, Environmental Studies, Biochemical Engineering, Water quality, Water resources, Ecotoxicology, Bioenergy, Recycling, Water and wastewater treatment, Bioremediation, Water Purification, Water Engineering, Aquatic Toxicology, Waste recycling, Environmental Management, Water Treatment, Wastewater Treatment, Energy and Environment, Waste Management, Sustainable Water Resources Management, Water Quality (Engineering), Urban Wetlands, Environmental GIS, Water Reuse, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Remote sensing and GIS applications in Landscape Research, Water Resources engineering, Water Pollution, Hydrogeochemistry, Geo-spatial analysis with GIS and GPS, Remote sensing and GIS, Aquaculture, Application of GIS and RS for Integrated Watershed Management, Water Resources Management, Water Resources (Environment), Wetland Management, Industrial wastewater Treatment, Integrated Water Resources Management, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Wastewater engineering, Green Buildings, Air Pollution Monitoring, Direito Ambiental, GIS and Landscape Archaeology, Planning, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Educación Ambiental, Educação Ambiental, Derecho Ambiental, Saneamiento Ambiental, Tratamiento de aguas, Water Reuse and Recycling, Ciencias Ambientales, Applied GIS for Urban Planning and Demographic Studies, Water and Sanitation, Biological Wastewater Treatment, Meio Ambiente, Ambient Media, Manual de Construcción de Reservorios de Agua de Lluvia, Biomonitoring, Medio Ambiente, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Groundwater Quality, Constructed Wetlands, Coastal Aquifer, Calidad De Agua, Indices de calidad de agua, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Site Selection Using Gis, Agua, Ingeniería Sanitaria, Native Plants, Sanitation, Ingeniería Ambiental, Sustainable Landscapes, Engenharia Civil, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Tratamiento De Aguas Residuales, Civil Enginering, Gestión Del Agua, Engenharia do Ambiente, Calidad De Agua De Manantiales, Civil and Environmental Engineering, Sanitasi, Bioproducts, Biomass Processing, Remote Sensing and GIS applications in Forestry, Sustainable Water & Sanitation, Gestión Integrada Del Agua, Trace Contaminants of Water Resiurces, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Geographic Information Systems (GIS), Conservacion De Suelo Y Agua, Engenharia De Ambiente, Civil Engg, and Engenharia Sanitária e Ambiental
A research project was conducted during 2008-2009 in Portugal to evaluate the potential of reclaimed water from constructed wetlands for irrigation reuse. A 21 month monitoring campaign was set up in a Filtralite-based horizontal... more
A research project was conducted during 2008-2009 in Portugal to evaluate the potential of reclaimed water from constructed wetlands for irrigation reuse. A 21 month monitoring campaign was set up in a Filtralite-based horizontal subsurface flow bed. Results showed a significant fluctuation of the hydraulic loading rate that has influenced the hydraulic retention time and the wastewater characteristics over time and, therefore, the removal efficiencies for BOD5, COD, TSS, nitrogen and phosphorus were lower than the reported values for CW performance. If the hydraulic loading rate could be properly controlled the treatment performance, as well as the quality of the reclaimed water, can be improved considerably. The effluent concentrations of conductivity (EC), BOD5, COD, TN, K, Ca, Mg and phytotoxic elements (Na, Cl and B), showed a suitable quality for irrigation reuse according to different international standards, although it is necessary to improve the removal of phosphorous and a final disinfection must be implemented to decrease the pathogenic content.
Research Interests: Engineering, Environmental Engineering, Agricultural Engineering, Chemical Engineering, Civil Engineering, and 118 moreLandscape Ecology, Environmental Science, Geology, Hydrogeology, Environmental Education, Architecture, Aquatic Ecology, Water, Wetlands, Hydrology, Hydraulics, International Development, Landscape Architecture, Environmental Studies, Sustainable agriculture, Biochemical Engineering, Water quality, Water resources, Ecotoxicology, Restoration Ecology, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Water Engineering, Aquatic Toxicology, Environmental Management, Environmental Sanitation, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Water Treatment, Wastewater Treatment, Agriculture, Wetland Ecology, Energy and Environment, Sustainable Water Resources Management, Water Quality (Engineering), Solo Performance, Urban Wetlands, Water Reuse, Water Resources (Engineering), Water Resources (Geography), Environmental Sustainability, Water Resources engineering, Water Pollution, Aquaculture, Water Resources Management, Water Resources (Environment), Wetland Management, Integrated Water Resources Management, Water Resources and Environmental Engineering, Bioremediation of wastewater, Water Quality (Environment), Earth and Environmental Sciences, Planning, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Science for Conservation and Restoration of Cultural Heritage, Educação Ambiental, Water Supply, Reclaimed Water Quality, Nutrient Management, Ciencias Ambientales, Water and Sanitation, Ecologia, Meio Ambiente, Water, Sanitation, and Hygiene, Manual de Construcción de Reservorios de Agua de Lluvia, Biomonitoring, Medio Ambiente, Water Supply and Sanitary Engineering, Subsurface Constructed Wetland, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Waste Water Treatment with Constructed Wetlands, Groundwater Quality, Constructed Wetlands, Civil Engineerig, Calidad Del Agua, Contaminación del Agua, Ingeniería Sanitaria, Native Plants, Sanitation, Ingeniería Ambiental, Sustainable Landscapes, Greenhouse Effect, Engenharia Civil, Bioprocessing, Valor costo y tarifas del agua, Proyecciones De Demandas De Agua, Civil Enginering, Water Supply and Sanitation, Institutional Sustainability, Civil Enginnering, Sustainability in construction industry, Water and Waste Water Engineering, Ingenieria Sanitaria, Civil and Environmental Engineering, Sanitasi, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Gestión Integrada Del Agua, Trace Contaminants of Water Resiurces, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Geographic Information Systems (GIS), Conservacion De Suelo Y Agua, Clean and Sanitize Premise, Civil Engg, and Engenharia Sanitária e Ambiental
Most of the wastewater treatment systems in small rural communities of the Cova da Beira region (Portugal) consist of constructed wetlands (CW) with horizontal subsurface flow (HSSF). It is believed that those systems allow the compliance... more
Most of the wastewater treatment systems in small rural communities of the Cova da Beira region (Portugal) consist of constructed wetlands (CW) with horizontal subsurface flow (HSSF). It is believed that those systems allow the compliance of discharge standards as well as the production of final effluents with suitability for reuse. Results obtained in a nine-month campaign in an HSSF bed pointed out that COD and TSS removal were lower than expected. A discrete sampling also showed that removal of TC, FC and HE was not enough to fulfill international irrigation goals. However, the bed had a very good response to variation of incoming nitrogen loads presenting high removal of nitrogen forms. A good correlation between mass load and mass removal rate was observed for BOD5, COD, TN, NH4-N, TP and TSS, which shows a satisfactory response of the bed to the variable incoming loads. The entrance of excessive loads of organic matter and solids contributed for the decrease of the effective volume for pollutant uptake and therefore, may have negatively influenced the treatment capability. Primary treatment should be improved in order to decrease the variation of incoming organic and solid loads and to improve the removal of COD, solids and pathogenic. The final effluent presented good physical–chemical quality to be reused for irrigation, which is the most likely application in the area.
Research Interests: Engineering, Environmental Engineering, Agricultural Engineering, Chemical Engineering, Civil Engineering, and 128 moreLandscape Ecology, Environmental Science, Environmental Education, Architecture, Climate Change, Water, Ecosystem Services, Wetlands, International Development, Poverty, Landscape Architecture, Environmental Studies, Sustainable agriculture, Irrigation, Biochemical Engineering, Water quality, Water resources, HIV/AIDS, Governance, Energy, Bioenergy, Water and wastewater treatment, Bioremediation, Water Engineering, Gender, Environmental Sanitation, Corporate Sustainability, Environmental Sanitation and Phytotechnology, Ecology, Water Treatment, Wastewater Treatment, Agriculture, Wetland Ecology, Energy and Environment, Waste Management, Sustainable Water Resources Management, Water Quality (Engineering), Urban Wetlands, Landscape Urbanism, Water Reuse, Water Resources (Engineering), Environmental Sustainability, Water Resources engineering, Water Pollution, Agricultural extension, Water Resources Management, Irrigation water use efficiency, Water Resources (Environment), Wetland Management, Irrigation Engineering, Irrigation Systems Design, Industrial wastewater Treatment, Biological Engineering, Integrated Water Resources Management, Chemical and Biological Engineering, Water Resources and Environmental Engineering, Bioremediation of wastewater, Irrigation water Management, Irrigation Water Management (Archaeology), Food Security, Direito Ambiental, Irrigation & Drainage, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Educación Ambiental, Educação Ambiental, Institutions, Nutrient Management, Ciencias Ambientales, Water and Sanitation, Biological Wastewater Treatment, Ecologia, Meio Ambiente, Water, Sanitation, and Hygiene, Medio Ambiente, Water Supply and Sanitary Engineering, Gestão Ambiental, civil Engineer, Engenharia Ambiental, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Caracterizaciones ambientales, Waste Water Treatment with Constructed Wetlands, Groundwater Quality, Constructed Wetlands, Civil Engineerig, Native Plants, Sanitation, Ingeniería Ambiental, Chemical and Environmental Engineering, Sustainable Landscapes, Greenhouse Effect, Engenharia Civil, Bioprocessing, Chemical Engeneering, CHEMICAL ENGINNERING, Civil Enginering, Chemical Engineer, Water Supply and Sanitation, Civil & Environmental Engineering, Institutional Sustainability, Sustainability in construction industry, Rural Livelihood Strategies, Chemical Eng, Ingenieria Sanitaria, Civil and Environmental Engineering, chemical and biological processes in environmental Engineering and Management, Sanitasi, Sanitário, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Small scall Irrigation, Development Policies and Strategies, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, Rain Gardens, Integrated River Basin Managent, Geo Environmental Engineering, Chemical Enggineering, Environmental Science and Engineering, Biological Systems Engineering, Clean and Sanitize Premise, Civil Engg, Engenharia Sanitária e Ambiental, and Chemical and Biomolecular/Biological Engineering
Owing to low investment and maintenance costs, there has been a growing interest in applying plants in wastewater treatment. Plants commonly used in constructed wetlands (CW) include: cattail, reed, rush, yellow flag, manna grass, and... more
Owing to low investment and maintenance costs, there has been a growing interest in applying plants in wastewater treatment. Plants commonly used in constructed wetlands (CW) include: cattail, reed, rush, yellow flag, manna grass, and willow.
In a CW, application of plants brings several benefits: creating aerobic conditions in the otherwise anaerobic rhizosphere, providing carbon compounds into the rhizosphere, uptaking pollutants (e.g. nutrients and heavy metals) from treated wastewater; improving the hydraulic conditions of wastewater flow through CW beds, and also increasing the available surface for growth of microbial biofilms. Hydrophytes also have great transpiration potential. Numerous studies have shown the importance of evapotranspiration during hot periods in natural wetlands and also in constructed wetlands. Evapotranspiration affects treatment efficiency in CWs: it increases the concentration of dissolved compounds due to decreasing water volume. Therefore, having regard to the mode of operating (VSSW or HSSW), temperature and influent characteristics (e.g. HLR and wastewater influent loads), the removal efficiency calculated as a comparison between initial and final concentration is lower, than expected from mass balance. Given results from systems in colder (Poland) and warmer (Portugal) climate conditions shows that the difference in methodology of removal efficiency calculation is significant, even if the CWs are operating in different modes. Usually, in the literature removal efficiency is expressed on the basis of concentrations, mostly due to lack of flow rate monitoring. Unfortunately, this may seriously underestimate treatment performance of CWs. This study suggests the need for routine monitoring of flow rate, or evaluation of potential evapotranspiration, to estimate removal efficiency of a CW based on mass balance.
In a CW, application of plants brings several benefits: creating aerobic conditions in the otherwise anaerobic rhizosphere, providing carbon compounds into the rhizosphere, uptaking pollutants (e.g. nutrients and heavy metals) from treated wastewater; improving the hydraulic conditions of wastewater flow through CW beds, and also increasing the available surface for growth of microbial biofilms. Hydrophytes also have great transpiration potential. Numerous studies have shown the importance of evapotranspiration during hot periods in natural wetlands and also in constructed wetlands. Evapotranspiration affects treatment efficiency in CWs: it increases the concentration of dissolved compounds due to decreasing water volume. Therefore, having regard to the mode of operating (VSSW or HSSW), temperature and influent characteristics (e.g. HLR and wastewater influent loads), the removal efficiency calculated as a comparison between initial and final concentration is lower, than expected from mass balance. Given results from systems in colder (Poland) and warmer (Portugal) climate conditions shows that the difference in methodology of removal efficiency calculation is significant, even if the CWs are operating in different modes. Usually, in the literature removal efficiency is expressed on the basis of concentrations, mostly due to lack of flow rate monitoring. Unfortunately, this may seriously underestimate treatment performance of CWs. This study suggests the need for routine monitoring of flow rate, or evaluation of potential evapotranspiration, to estimate removal efficiency of a CW based on mass balance.
Research Interests: Wetlands, Phytoremediation, Phytochemistry, Water quality, Water and wastewater treatment, and 67 moreWastewater Treatment, Wetland Ecology, Evaporation, Water Quality (Engineering), Aquatic and Wetland Angiosperms, Urban Wetlands, Nitrogen Cycle, Water Quality Modeling, Wetland Management, Industrial wastewater Treatment, Wetland Archaeology, Bioremediation of wastewater, Phosphorus, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Nitrogen Fixation, Wastewater, Water and Wastewater, Wetland, Biological Wastewater Treatment, Archaelogy Wetland Settlements, Evapotranspiration, Adsorption and wastewater treatment, Subsurface Constructed Wetland, Water Supply &wastewater Treatment, Wetlands Ecology, Environmental biogeochemistry, wetlands, biodiversity conservation, Treatment of petroleum contaminated wastewater using constructed wetlands, Water Quality Index, Biological Nitrogen Fixation, Water quality, wastewater reuse, integrated water resources management, water resources pollution, emerging pollutants in water, soil and groundwater, Nitrogen, Wetland and Waterfowl research, Waste Water Treatment with Constructed Wetlands, Wastewater Engineering, Constructed Wetlands, Wastewater`treatment, Subsurface Contaminant Transport, Tratamento De Efluentes, Wetlands Ecology, Soil Conservation and Watershed Management, Horizontal Subsurface Flow Constructed Wetlands, Vertical Flow Constructed Wetlands, Biological Wastewater Treatment, Anaerobic Digestion (Methanogenic and BSR), Activated Sludge Nutrient Removal and Integrated WWTP modelling, Wastewater Treatment by Plants in Constructed Wetland, Water Quality Assessment, Wetland Conservation, Nitrogen Fertilization, Constructed Wetland, Wetlands Management, Wastewater Management, Tratamento de Água e Água residuais, Heavy Metal Phytoremedation for Ecological Wastewater Treatment, Wetland Plants and Aquatic Plants, Tratamento De Esgoto, Advanced Wastewater Treatment, Wastewater reuse, Macrófitas, Water Quality, Characterisation of subsurface structures for evironmental geohazard mitigation, The effect of green water technology on water quality in the pond, Effect of plant and microorganism in constructed wetland for waste treatment, Phosphate, Subsurface Flow, Wetland Systems, Surface and Subsurface Hydrology, Impact Assessment of Coastal Wetlands Freshwater Ecosystemst, Constructed Wetlands In India, and Wetland Restoration
Research Interests: Engineering, Environmental Engineering, Chemical Engineering, Landscape Ecology, Architecture, and 34 moreWetlands, International Development, Landscape Archaeology, Biochemical Engineering, Water quality, Energy, Bioenergy, Bioremediation, Corporate Sustainability, Ecology, Water Treatment, Wastewater Treatment, Agriculture, Bioremediation of wastewater, (iv) Treatment of domestic and industrial wastewater by constructed wetland, Biofuels, Ecologia, Waste Water Treatment with Constructed Wetlands, Constructed Wetlands, Native Plants, Sustainable Landscapes, Greenhouse Effect, Bioprocessing, Institutional Sustainability, Sustainability in construction industry, Bioproducts, Biomass Processing, Sustainable Water & Sanitation, Waste, Materials and Consumption, Social Aspects of Sustainability, Native Vines for Living Walls, Bio Swales, Restoration of Invasive Species, and Rain Gardens
Horizontal subsurface flow (HSSF) constructed wetlands are widely used for wastewater treatment but there’s still a lack of information on flow characteristics changes throughout the porous bed over time. The continuous growth of roots,... more
Horizontal subsurface flow (HSSF) constructed wetlands are widely used for wastewater treatment but there’s still a lack of information on flow characteristics changes throughout the porous bed over time. The continuous growth of roots, the adsorption, sedimentation and precipitation of wastewater compounds and the biofilm release over operation time leads to the development of stagnated areas, the appearance of hydraulic short-circuiting and variations in dispersion conditions, which affect substrate distribution throughout the bed and, therefore, may worsen the overall performance of the system. In order to enable a better understanding of the transport mechanisms throughout the bed, two series of tracer tests were performed in a laboratory HSSF system at the hydraulic loading of 4.7x10-3 m3 m-2 h-1. The first series was executed with the bed without vegetation and the second with the bed already colonized with Phragmites australis after an operation period of eight months at an average organic loading of 12 g m-2 d-1 COD. The magnitude of longitudinal dispersion was estimated both by a curve fitting technique using the non-linear least square optimization method (LSOM) and using the moment method (MOM) over the advection-dispersion-reaction equation. The flow regime and the extension of dead volumes were estimated by the same curve-fitting technique over the multiple tanks in series model (MTS). The results showed that the development of plants and biomass did not contribute for a significant amount of longitudinal dispersion in the overall media length. However, the dispersion was very strong in the inlet section, where the dead volumes increased approximately 65% within the colonized bed. The flow regime may be considered as plug flow throughout the overall length and the tracer retention was associated with dispersion and internal recirculation and, additionally, for Series II it was associated with the occurrence of clusters of biomass and roots. The MTS better explain the tracer results for the overall media length. The MOM seems to be inadequate for estimating Pe leading to underestimated values when compared with the ones calculated by LSOM.