Dynamics of hydrocarbon mineralization characterized by isotopic analysis at a jet-fuel-contaminated site in subtropical climate

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorHelmholtz Centre for Environmental Research – UFZ-
Autor(es): dc.contributorPetrobras Research Center – CENPES-
Autor(es): dc.creatorTeramoto, Elias Hideo [UNESP]-
Autor(es): dc.creatorVogt, Carsten-
Autor(es): dc.creatorMartins Baessa, Marcus Paulus-
Autor(es): dc.creatorPolese, Luciana [UNESP]-
Autor(es): dc.creatorSoriano, Adriana Ururahy-
Autor(es): dc.creatorChang, Hung Kiang [UNESP]-
Autor(es): dc.creatorRichnow, Hans Hermann-
Data de aceite: dc.date.accessioned2022-02-22T00:35:00Z-
Data de disponibilização: dc.date.available2022-02-22T00:35:00Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jconhyd.2020.103684-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201958-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201958-
Descrição: dc.descriptionRelease of benzene, toluene, ethylbenzene, and xylene (BTEX) as components of the light non-aqueous phase liquids (LNAPL) contaminates soil and groundwater. Assessing the mechanisms of degradation and mineralization of BTEX in groundwater helps understand the migration of the dissolved plume, enabling the reduction of risks to humans. Here, we studied the fate of ethylbezene, m,p-xylenes and o-xylenes and the accompanying formation of methane in a Cenozoic lateritic aquifer in Brazil by compound-specific carbon stable isotope analysis (CSIA), to gain insights into the complex dynamics of release and biodegradation of BTEX in the LNAPL source zone. The enrichment of ∂13C in aromatic compounds dissolved in groundwater compared to the corresponding compounds in LNAPL indicate that CSIA can provide valuable information regarding biodegradation. The isotopic analysis of methane provides direct indication of oxidation mediated by aquifer oxygenation. The ∂13C-CO2 values indicate methanogenesis prevailing at the border and aerobic biodegradation in the center of the LNAPL source zone. Importantly, the isotopic results allowed major improvements in the previously developed conceptual model, supporting the existence of oxic and anoxic environments within the LNAPL source zone.-
Descrição: dc.descriptionFundação para o Desenvolvimento da UNESP (FUNDUNESP)-
Descrição: dc.descriptionHelmholtz-Zentrum für Umweltforschung-
Descrição: dc.descriptionSão Paulo State University UNESP Environmental Studies Center (CEA) and Basin Studies Laboratory (LEBAC)-
Descrição: dc.descriptionHelmholtz Centre for Environmental Research – UFZ-
Descrição: dc.descriptionPetrobras Research Center – CENPES-
Descrição: dc.descriptionSão Paulo State University UNESP Dept. of Applied Geology-
Descrição: dc.descriptionSão Paulo State University UNESP Environmental Studies Center (CEA) and Basin Studies Laboratory (LEBAC)-
Descrição: dc.descriptionSão Paulo State University UNESP Dept. of Applied Geology-
Idioma: dc.languageen-
Relação: dc.relationJournal of Contaminant Hydrology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBTEX mineralization-
Palavras-chave: dc.subjectCSIA-
Palavras-chave: dc.subjectInterphase mass transfer-
Palavras-chave: dc.subjectIsotopic analysis-
Palavras-chave: dc.subjectMethanogenesis-
Título: dc.titleDynamics of hydrocarbon mineralization characterized by isotopic analysis at a jet-fuel-contaminated site in subtropical climate-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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