Aquifers
Mostrando 1-12 de 113 artigos, teses e dissertações.
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1. ENHANCED REMOVAL OF PERSISTENT CONTAMINANTS AND TOXICITY REDUCTION THROUGH THE APPLICATION OF A TRIPLE-STAGE FENTON PROCESS TO SANITARY LANDFILL LEACHATES FROM YUCATAN, MEXICO
Sanitary landfill leachate (SLL) is a mixture of highly toxic and recalcitrant pollutants that threatens the water quality of the Yucatán Peninsula karst aquifer, one of the most extensive aquifers on the planet. To reduce the adverse environmental impacts of this wastewater, a triple-stage Fenton process (FP) was applied in an old SLL. Removal efficiencies
Química Nova. Publicado em: 2022
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2. Analysis of the Levels of Alteration of Aquifers Caused by the Installation of Wind Farms on Dunes on the Coast of Ceará, Brazil
Resumo A pesquisa objetivou avaliar os níveis de alteração dos aquíferos a partir da instalação de parques eólicos sobre dunas no litoral do Ceará por meio dos métodos de vulnerabilidade GOD e POSH, fluxo subterrâneo e aplicação da análise multivariada para subsidiar no monitoramento da qualidade da água subterrânea na área. Foram realizadas
Rev. Ambient. Água. Publicado em: 25/11/2019
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3. How much do we know about the groundwater quality and its impact on Brazilian society today?
Resumo As águas subterrâneas são um recurso imprescindível para a sociedade e o meio ambiente no Brasil. Mais de 557 m3/s (17.5 km3/a) são extraídos através de 2.5 milhões de poços para atender a demanda nas cidades e no campo, gerando uma economia de R$ 56 bilhões ao ano (US$ 14 bilhões/ano). O aquífero tem função impar no ciclo hidrológico,
Acta Limnol. Bras.. Publicado em: 04/11/2019
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4. Mapeamento dos aspectos hidrogeoquímicos de águas subterrâneas a partir de estatística multivariada e redes neurais artificiais
RESUMO O objetivo central deste trabalho foi realizar o mapeamento dos aspectos hidrogeoquímicos de águas subterrâneas usando a estatística multivariada e redes neurais artificiais como subsídio para identificação de padrões espaciais. Para tal, foi executado um estudo de caso em aquíferos no município de Lençóis, Bahia, na região da Chapada Dia
Eng. Sanit. Ambient.. Publicado em: 05/08/2019
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5. Use of hydrogeophysical data to determine the role of faults in the geometry of the Barreiras Aquifer, Brazil
Abstract Characterizing the geometry of an aquifer is fundamental for determining the locations of more productive wells. Commonly, flow and hydraulic parameters, such as transmissivity, are related to the thickness of the aquifer, which emphasizes the importance of regional hydrogeophysical characterization. Shuttle radar imagery, well profiles and geoelect
Braz. J. Geol.. Publicado em: 27/06/2019
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6. Determinación del consumo de agua potable durante la construcción de viviendas en una zona semi desértica de Chile
ABSTRACT In recent years, water scarcity in northern Chile has increased markedly, leading to an over exploitation of groundwater aquifers. In the construction sector, water is used in large quantities throughout the different activities of the construction projects, this fact makes essential to quantify the water consumption in order to know the real demand
Matéria (Rio J.). Publicado em: 18/10/2018
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7. Polydimethylsiloxane as a Matrix for the Stabilization and Immobilization of Zero-Valent Iron Nanoparticles. Applications to Dehalogenation of Environmentally Deleterious Molecules
A wet-synthetic method is described to obtain magnetic, air-stable, zero-valent iron nanoparticles coated with an alkanedioic acid. The particles can be immobilized in an amino-substituted polysiloxane matrix to provide materials capable of dechlorinating, debrominating, and deiodinating a wide variety of halogenated organic molecules dissolved initially in
J. Braz. Chem. Soc.. Publicado em: 2018-07
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8. Relationships of stable isotopes, water-rock interaction and salinization in fractured aquifers, Petrolina region, Pernambuco State, Brazil
Abstract The Petrolina County, Pernambuco State, Brazil, presents specificities that make it unique from a hydrogeological point of view. Water resource scarcity is both a quantitative and qualitative issue. The climate is classified as semiarid, having low precipitation, along with high temperatures and evapotranspiration rates. Aquifer zones are related to
REM, Int. Eng. J.. Publicado em: 2018-03
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9. International cooperation on transboundary aquifers in South America and the Guarani Aquifer case
Abstract International cooperation on groundwater takes many forms. The mobilization of different actors helps to promote cooperation initiatives in South America, where the most well known case is the Guarani Aquifer System (GAS). This article intends to analyze how international actors have motivated cooperation on transboundary aquifers and its repercussi
Rev. bras. polít. int.. Publicado em: 25/07/2016
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10. Fragmentación de escala y precarización. Referentes de la estructuración urbana convencional
Developing countries play the role of supplying the contemporary economy. The territorial and social conditions of the place refer to the scale fragmentation process and to the increase in the poor population because there is a tendency of unrestricted use of land in order to convert it into an urban and productive place. In the Mexican case, the loss of lan
Cad. Metrop.. Publicado em: 2015-05
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11. Recarga artificial de aquíferos : proposta para o núcleo rural Lago Oeste, DF
A gestão de recursos hídricos tem como objetivo maior assegurar a disponibilidade hídrica em quantidade e qualidade suficientes para atendimento das demandas das atual e futura gerações. O presente estudo propõe avaliar a viabilidade de implantação de sistema de recarga artificial de aquíferos no Núcleo Rural Lago Oeste, Distrito Federal, como ferr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2012
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12. MONITORING THE FLUCTUATION OF THE WATER TABLE IN UNCONFINED AQUIFERS FOR EVALUATION OF THE POTENTIAL RECHARGE IN OUTCROP ZONE OF THE GUARANI AQUIFER SYSTEM IN CACEQUI - RS/BR / MONITORAMENTO DA FLUTUAÇÃO DOS NÍVEIS DE ÁGUA EM AQUÍFEROS FREÁTICOS PARA AVALIAÇÃO DO POTENCIAL DE RECARGA EM ÁREA DE AFLORAMENTO DO SISTEMA AQUÍFERO GUARANI EM CACEQUI - RS
This research aimed to estimate the recharge and groundwater water table fluctuation in areas with withdrawals of groundwater and surface water related to the variation of groundwater levels and rainfall events. The two areas of study was inserted within the Cacequi Municipality, which is located in the Rio Grande do Sul state, southwestern Brazil, in the Gu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/03/2012