Impact of water table fluctuations on the seasonal effectiveness of the pump-and-treat remediation in wet–dry tropical regions

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorTeramoto, Elias Hideo [UNESP]-
Autor(es): dc.creatorPede, Marco Aurélio Zequim [UNESP]-
Autor(es): dc.creatorChang, Hung Kiang [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:52:04Z-
Data de disponibilização: dc.date.available2022-02-22T00:52:04Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2020-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s12665-020-09182-1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/207979-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/207979-
Descrição: dc.descriptionThe pump-and-treat (P&T) method is a common remediation approach that is used to mitigate occurrences of hydrocarbon contamination. In a well-studied site that had been contaminated by a large volume of jet fuel, continuous monitoring of the water table and floating phase thickness revealed the most significant process governing the effectiveness of the site’s active remediation system. The floating phase thickness recorded in the wells monitored varied greatly (> 0.50 m) and was negatively correlated with the water table level. Although the dependence of light non-aqueous phase liquid (LNAPL) thickness on water table fluctuations is widely recognized, LNAPL recovery, which is governed by alternating cycles of LNAPL release and entrapment in pore spaces, has been poorly described. Thus, we present a specific case in which LNAPL recovery is expected only episodically, when the water table falls sufficiently. In the period spanning from 2006 to 2008, LNAPL remediation recovered nearly 180 m3 of oil. In later years, the volume of recovered LNAPL declined and ceased between 2010 and 2014, when the water table rose. Importantly, our research demonstrates that the P&T remediation approach is solely effective during a period of 4 months in dry years. Thus, cleanup methods and contaminated site management strategies should be reconsidered.-
Descrição: dc.descriptionCenter for Environmental Studies and Basin Studies Laboratory São Paulo State University UNESP-
Descrição: dc.descriptionDepartment of Geology São Paulo State University UNESP-
Descrição: dc.descriptionCenter for Environmental Studies and Basin Studies Laboratory São Paulo State University UNESP-
Descrição: dc.descriptionDepartment of Geology São Paulo State University UNESP-
Idioma: dc.languageen-
Relação: dc.relationEnvironmental Earth Sciences-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHydrocarbon contamination-
Palavras-chave: dc.subjectHydrology of tropical climates-
Palavras-chave: dc.subjectLNAPL entrapment-
Palavras-chave: dc.subjectLNAPL remediation-
Palavras-chave: dc.subjectPump-and-treat-
Palavras-chave: dc.subjectWater table fluctuation-
Título: dc.titleImpact of water table fluctuations on the seasonal effectiveness of the pump-and-treat remediation in wet–dry tropical regions-
Tipo de arquivo: dc.typelivro digital-
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