CONDUCTIVE GEOPHYSICAL ANOMALIES ASSOCIATED WITH PETROLEUM HYDROCARBON BIODEGRADATION PROCESS IN A NON-SATURATED ZONE

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorPETROBRAS CENPES-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorBaessa, Marcus-
Autor(es): dc.creatorOliva, Andresa [UNESP]-
Autor(es): dc.creatorSoriano, Adriana-
Autor(es): dc.creatorKiang, Chang [UNESP]-
Autor(es): dc.creatorHELMHOLTZ CENTRE ENVIRONMENTAL RESEARCH-UFZ-
Data de aceite: dc.date.accessioned2022-02-22T00:03:39Z-
Data de disponibilização: dc.date.available2022-02-22T00:03:39Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2008-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/194715-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/194715-
Descrição: dc.descriptionGeophysical surveys using eletroresistivity methods and hidrochemical analyses were applied aiming the characterization of geoelectrical signatures in hydrocarbon contaminated sites located in an industrial site in Sao Paulo, Brazil. There have been accomplished six vertical electric soundings (VESs) and three 2D electrical imaging, which identified conductive geophysical anomalies. It was verified that the presence of conductive anomalies within the non-saturated zone coincided with the occurrence of free phase on the monitoring wells. In those wells, lower values for nitrate (NO3-) concentration and increased ammonium (NH4+) contents suggest the occurrence of dissimilatory nitrate reduction process. Additionally, reduced concentrations observed for sulfate (sO(4)(2-)) and ferrous (Fe-2(+)) ions in the free phase contaminated groundwater generated the hypothesis that they were, respectively, biologically reduced to sulfide (S2-) and precipitated as iron sulfide (FeS). Based on those results, it was concluded that the conductive anomalies detected inside the non-saturated zone were directly associated with the presence of hydrocarbon residual phase, which is undergoing a biodegradation process. Therefore, the geophysical methods applied in this study, coupled with hidrochemical data, allowed the identification of areas under petroleum hydrocarbons influence.-
Descrição: dc.descriptionBiotechnology and Environmental Treatments Department of Petrobras Research Center (CENPES)-
Descrição: dc.descriptionPETROBRAS CENPES, Ilha Fundao, Av Horacio Macedo 950,Cidade Univ, BR-21941915 Rio De Janeiro, RJ, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Unesp, BR-13506900 Sao Paulo, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Unesp, BR-13506900 Sao Paulo, Brazil-
Formato: dc.format45-+-
Idioma: dc.languageen-
Publicador: dc.publisherHelmholtz Centre Environmental Research-ufz-
Relação: dc.relationConsoil 2008: Theme C - Site Investigation: Monitoring And Screening-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectElectroresistivity-
Palavras-chave: dc.subject2D electrical imaging-
Palavras-chave: dc.subjectvertical electrical sounding-
Palavras-chave: dc.subjecthydrocarbon biodegradation and conductive anomalies-
Título: dc.titleCONDUCTIVE GEOPHYSICAL ANOMALIES ASSOCIATED WITH PETROLEUM HYDROCARBON BIODEGRADATION PROCESS IN A NON-SATURATED ZONE-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.