Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina

Chromium (Cr) is one of the main pollutants affecting both soil and groundwater systems in some areas within the Matanza-Riachuelo River Basin (MRB) in Argentina. The particular site of study is located near an abandoned tannery and chemical industry facilities. Cr toxicity and mobility depend on it...

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Detalles Bibliográficos
Publicado: 2018
Materias:
Groundwater
Hexavalent chromium
Matanza-Riachuelo river basin
Reactive transport modelling
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17434955_v9_n1_p16_Ceballos
http://hdl.handle.net/20.500.12110/paper_17434955_v9_n1_p16_Ceballos
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_17434955_v9_n1_p16_Ceballos
record_format dspace
spelling paper:paper_17434955_v9_n1_p16_Ceballos2023-06-08T16:27:54Z Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina Groundwater Hexavalent chromium Matanza-Riachuelo river basin Reactive transport modelling Chromium (Cr) is one of the main pollutants affecting both soil and groundwater systems in some areas within the Matanza-Riachuelo River Basin (MRB) in Argentina. The particular site of study is located near an abandoned tannery and chemical industry facilities. Cr toxicity and mobility depend on its oxidation state: Cr(VI) is an active carcinogen, more soluble and mobile, whereas Cr(III) shows low toxicity and solubility, precipitating in the form of amorphous Cr(OH)3(am). This paper is devoted to elucidate the main key controls on the Cr(VI)-plume transport at this site using reactive transport (RT) modelling and uncertainty quantification analysis tools. RT results suggest a Cr source term on the surface to explain the observed Cr concentrations in both Pampeano and Puelche aquifers. UQ analysis indicates that the Cr(VI) concentrations in both aquifers are sensitive to hydraulic connectivity between them, the reaction reduction rates Cr(VI)-Cr(III) and the organic matter contents. © 2018 Inderscience Enterprises Ltd. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17434955_v9_n1_p16_Ceballos http://hdl.handle.net/20.500.12110/paper_17434955_v9_n1_p16_Ceballos
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Groundwater
Hexavalent chromium
Matanza-Riachuelo river basin
Reactive transport modelling
spellingShingle Groundwater
Hexavalent chromium
Matanza-Riachuelo river basin
Reactive transport modelling
Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
topic_facet Groundwater
Hexavalent chromium
Matanza-Riachuelo river basin
Reactive transport modelling
description Chromium (Cr) is one of the main pollutants affecting both soil and groundwater systems in some areas within the Matanza-Riachuelo River Basin (MRB) in Argentina. The particular site of study is located near an abandoned tannery and chemical industry facilities. Cr toxicity and mobility depend on its oxidation state: Cr(VI) is an active carcinogen, more soluble and mobile, whereas Cr(III) shows low toxicity and solubility, precipitating in the form of amorphous Cr(OH)3(am). This paper is devoted to elucidate the main key controls on the Cr(VI)-plume transport at this site using reactive transport (RT) modelling and uncertainty quantification analysis tools. RT results suggest a Cr source term on the surface to explain the observed Cr concentrations in both Pampeano and Puelche aquifers. UQ analysis indicates that the Cr(VI) concentrations in both aquifers are sensitive to hydraulic connectivity between them, the reaction reduction rates Cr(VI)-Cr(III) and the organic matter contents. © 2018 Inderscience Enterprises Ltd.
title Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
title_short Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
title_full Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
title_fullStr Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
title_full_unstemmed Applying reactive transport modelling in a chromium-contaminated site in the Matanza-Riachuelo basin, Buenos Aires, Argentina
title_sort applying reactive transport modelling in a chromium-contaminated site in the matanza-riachuelo basin, buenos aires, argentina
publishDate 2018
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17434955_v9_n1_p16_Ceballos
http://hdl.handle.net/20.500.12110/paper_17434955_v9_n1_p16_Ceballos
_version_ 1768541818351255552

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