The groundwater contamination by petroleum products such as gasoline is one of the main impacts of retail comercial activity of retail automotive fuels. And one of the ways to detect such impact is to characterize the quality of groundwater near these sites for the presence of monoaromatic hydrocarbons such as benzene, toluene, ethylbenzene and xylene isomers (BTEX). In this sense, we sought to characterize the...
Tendo em vista a crescente preocupação com a preservação da qualidade da água subterrânea, o presente trabalho foi desenvolvido com o intuito de alertar as entidades responsáveis pelo gerenciamento deste recurso, bem como orientar o poder público na determinação das atividades a serem desenvolvidas com base nos programas de uso e ocupação do solo, em áreas classificadas com risco potencial de contaminação. A ár...
The contamination of groundwater by degradation of buried corpses in cemeteries appears as a common reality in Brazil and worldwide. In the Fortaleza (CE), the Bom Jardim cemetery is a typical example of a contamination threat. The risk is mainly due to the fact that often the population utilizes the groundwater for different purposes. In this investigation, we analyzed the possibility of the Bom Jardim cemeter...
Population's demand for water has compelled the development of techniques to improve the use of all forms of water resources. In some parts of the United States hydraulic fracturing has been used to enhance the yield of wells drilled in bedrock. In Brazil's Northeast region, wells drilled in this kind of formation often exhibit low water yield that sometimes results in these wells being deactivated or abandoned...
The process of calibration of hydrodynamic parameters represents an important part IN computer modeling; its general approach consists of minimizing an objective function expressed by the difference between observed and simulated hydraulics heads. Guo and Zhang (2000) and Schuster and Araújo (2004) proposed an alternative process for estimating the parameters, through the minimization of the difference between ...