Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams

Autores
Porzionato, Natalia Florencia; Candal, Roberto Jorge; Curutchet, Gustavo Andres
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Sediments of fluvial streams are a sink for pollutants such as heavy metals and organic recalcitrant compounds. In anoxic conditions, sulphide generation and alkalinisation cause precipitation of heavy metals. The redox potential of the system could change to higher values, mainly owing to oxygen exposition generated by anthropogenic disturbances of the sediment such as dredging operations. Knowledge about the mechanisms involved is fundamental to assess the risk of acid generation and rise in heavy metals bioavailability. In this paper, the characterisation and assessment of acidification risk of sediments of a contaminated stream near Buenos Aires was carried out by static and kinetic assays. Speciation of heavy metals was determined after metal sequential extraction procedure. Also, re-suspension of sediments assay in batch mode, with and without Acidithiobacillus ferrooxidans inoculum, was carried out to assess the chemical changes that occur at oxygen exposure, verifying the acidification and heavy metal release processes.
Fil: Porzionato, Natalia Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Fil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Fil: Curutchet, Gustavo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Materia
Acid Generation Risk
Biocatalysed Leaching Processes
Metal Leaching
Polluted Urban Streams
Sediment Acidification
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/83802
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Biocatalysed acidification and metal leaching processes in sediments of polluted urban streamsPorzionato, Natalia FlorenciaCandal, Roberto JorgeCurutchet, Gustavo AndresAcid Generation RiskBiocatalysed Leaching ProcessesMetal LeachingPolluted Urban StreamsSediment Acidificationhttps://purl.org/becyt/ford/2.8https://purl.org/becyt/ford/2Sediments of fluvial streams are a sink for pollutants such as heavy metals and organic recalcitrant compounds. In anoxic conditions, sulphide generation and alkalinisation cause precipitation of heavy metals. The redox potential of the system could change to higher values, mainly owing to oxygen exposition generated by anthropogenic disturbances of the sediment such as dredging operations. Knowledge about the mechanisms involved is fundamental to assess the risk of acid generation and rise in heavy metals bioavailability. In this paper, the characterisation and assessment of acidification risk of sediments of a contaminated stream near Buenos Aires was carried out by static and kinetic assays. Speciation of heavy metals was determined after metal sequential extraction procedure. Also, re-suspension of sediments assay in batch mode, with and without Acidithiobacillus ferrooxidans inoculum, was carried out to assess the chemical changes that occur at oxygen exposure, verifying the acidification and heavy metal release processes.Fil: Porzionato, Natalia Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; ArgentinaFil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; ArgentinaFil: Curutchet, Gustavo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; ArgentinaInderscience Enterprises2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/83802Porzionato, Natalia Florencia; Candal, Roberto Jorge; Curutchet, Gustavo Andres; Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams; Inderscience Enterprises; International Journal of Environment and Health; 7; 1; 4-2014; 3-141743-49551743-4963CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1504/IJENVH.2014.060125info:eu-repo/semantics/altIdentifier/url/http://www.inderscience.com/offer.php?id=60125info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:24:24Zoai:ri.conicet.gov.ar:11336/83802instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:24:24.77CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
title Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
spellingShingle Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
Porzionato, Natalia Florencia
Acid Generation Risk
Biocatalysed Leaching Processes
Metal Leaching
Polluted Urban Streams
Sediment Acidification
title_short Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
title_full Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
title_fullStr Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
title_full_unstemmed Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
title_sort Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams
dc.creator.none.fl_str_mv Porzionato, Natalia Florencia
Candal, Roberto Jorge
Curutchet, Gustavo Andres
author Porzionato, Natalia Florencia
author_facet Porzionato, Natalia Florencia
Candal, Roberto Jorge
Curutchet, Gustavo Andres
author_role author
author2 Candal, Roberto Jorge
Curutchet, Gustavo Andres
author2_role author
author
dc.subject.none.fl_str_mv Acid Generation Risk
Biocatalysed Leaching Processes
Metal Leaching
Polluted Urban Streams
Sediment Acidification
topic Acid Generation Risk
Biocatalysed Leaching Processes
Metal Leaching
Polluted Urban Streams
Sediment Acidification
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.8
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Sediments of fluvial streams are a sink for pollutants such as heavy metals and organic recalcitrant compounds. In anoxic conditions, sulphide generation and alkalinisation cause precipitation of heavy metals. The redox potential of the system could change to higher values, mainly owing to oxygen exposition generated by anthropogenic disturbances of the sediment such as dredging operations. Knowledge about the mechanisms involved is fundamental to assess the risk of acid generation and rise in heavy metals bioavailability. In this paper, the characterisation and assessment of acidification risk of sediments of a contaminated stream near Buenos Aires was carried out by static and kinetic assays. Speciation of heavy metals was determined after metal sequential extraction procedure. Also, re-suspension of sediments assay in batch mode, with and without Acidithiobacillus ferrooxidans inoculum, was carried out to assess the chemical changes that occur at oxygen exposure, verifying the acidification and heavy metal release processes.
Fil: Porzionato, Natalia Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Fil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
Fil: Curutchet, Gustavo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín. Instituto de Investigación en Ingeniería Ambiental; Argentina
description Sediments of fluvial streams are a sink for pollutants such as heavy metals and organic recalcitrant compounds. In anoxic conditions, sulphide generation and alkalinisation cause precipitation of heavy metals. The redox potential of the system could change to higher values, mainly owing to oxygen exposition generated by anthropogenic disturbances of the sediment such as dredging operations. Knowledge about the mechanisms involved is fundamental to assess the risk of acid generation and rise in heavy metals bioavailability. In this paper, the characterisation and assessment of acidification risk of sediments of a contaminated stream near Buenos Aires was carried out by static and kinetic assays. Speciation of heavy metals was determined after metal sequential extraction procedure. Also, re-suspension of sediments assay in batch mode, with and without Acidithiobacillus ferrooxidans inoculum, was carried out to assess the chemical changes that occur at oxygen exposure, verifying the acidification and heavy metal release processes.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/83802
Porzionato, Natalia Florencia; Candal, Roberto Jorge; Curutchet, Gustavo Andres; Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams; Inderscience Enterprises; International Journal of Environment and Health; 7; 1; 4-2014; 3-14
1743-4955
1743-4963
CONICET Digital
CONICET
url http://hdl.handle.net/11336/83802
identifier_str_mv Porzionato, Natalia Florencia; Candal, Roberto Jorge; Curutchet, Gustavo Andres; Biocatalysed acidification and metal leaching processes in sediments of polluted urban streams; Inderscience Enterprises; International Journal of Environment and Health; 7; 1; 4-2014; 3-14
1743-4955
1743-4963
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1504/IJENVH.2014.060125
info:eu-repo/semantics/altIdentifier/url/http://www.inderscience.com/offer.php?id=60125
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Inderscience Enterprises
publisher.none.fl_str_mv Inderscience Enterprises
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1843606593499824128
score 13.001348

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