Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources

Carbon dioxide (CO2) Capture and Storage (CCS) is a technology to reduce the emissions of this gas to the atmosphere by sequestering it in geological formations. In the case of offshore storage, unexpected CO2 leakages will acidify the marine environment. Reductions of the pH might be also caused by...

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Autores: Martín Torre, María del Camino, Cifrián Bemposta, Eva, Ruiz Gutiérrez, Gema, Galán Corta, Berta|||0000-0003-2145-3669, Viguri Fuente, Javier Rufino|||0000-0002-6658-0429
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/13231
Acesso em linha:http://hdl.handle.net/10902/13231
Access Level:acceso abierto
Palavra-chave:Kinetic modelling
HNO3 and CO2 acidification
Contaminant release
Resuspension
pH-static leaching
Oxic and anoxic sediment
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spelling Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sourcesMartín Torre, María del CaminoCifrián Bemposta, EvaRuiz Gutiérrez, GemaGalán Corta, Berta|||0000-0003-2145-3669Viguri Fuente, Javier Rufino|||0000-0002-6658-0429Kinetic modellingHNO3 and CO2 acidificationContaminant releaseResuspensionpH-static leachingOxic and anoxic sedimentCarbon dioxide (CO2) Capture and Storage (CCS) is a technology to reduce the emissions of this gas to the atmosphere by sequestering it in geological formations. In the case of offshore storage, unexpected CO2 leakages will acidify the marine environment. Reductions of the pH might be also caused by anthropogenic activities or natural events such as acid spills and dredging operations or storms and floods. Changes in the pH of the marine environment will trigger the mobilisation of elements trapped in contaminated shallow sediments with unclear redox boundary. Trace element (As, Cd, Cr, Cu, Ni, Pb and Zn) release from anoxic and oxic estuarine sediment is analysed and modelled under different laboratory acidification conditions using HNO3 (l) and CO2 (g): acidification at pH = 6.5 as worst-case scenario in events of CO2 leakages and acid spills, and acidification at pH = 7.0 as a seawater scenario under CO2 leakages, acid spills, as well as sediment resuspension. The prediction of metal leaching behaviour appear to require sediment specific and site specific tools. In the present work it is demonstrated that the proposed three in-series reactions model predicts the process kinetics of the studied elements under different simulated environmental conditions (oxidation levels and acid sources). Differences between HNO3 and CO2 acidification are analysed through the influence of the CO2 gas on the ionic competition of the medium. The acidification with CO2 provokes higher released concentrations from the oxic sediment than from the anoxic sediment, except in the case of Zn, which influences the release of the other studied elements. Slight acidification can endanger the aquatic environment through an important mobilisation of contaminants. The obtained prediction of the contaminant release from sediment (kinetic parameters and maximum concentrations) can contribute to the exposure assessment stage for risk management and preincidental planning in accidental CO2 leakages and chemical spills scenarios.This work was supported by the financial help of the Spanish Ministry of Economy and Competitiveness, Project CTM 2011-28437-C02-01, ERDF included. M.C. Martín-Torrewas funded by the Spanish Ministry of Economy and Competitiveness by means of a F.P.I. fellowship No. BES-2012-053816.Academic PressUniversidad de Cantabria20172017-09-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/13231Journal of Environmental Management, 2017, 199, 211-221reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/132312026-06-02T12:39:31Z
dc.title.none.fl_str_mv Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
title Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
spellingShingle Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
Martín Torre, María del Camino
Kinetic modelling
HNO3 and CO2 acidification
Contaminant release
Resuspension
pH-static leaching
Oxic and anoxic sediment
title_short Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
title_full Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
title_fullStr Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
title_full_unstemmed Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
title_sort Estuarine sediment resuspension and acidification: Release behaviour of contaminants under different oxidation levels and acid sources
dc.creator.none.fl_str_mv Martín Torre, María del Camino
Cifrián Bemposta, Eva
Ruiz Gutiérrez, Gema
Galán Corta, Berta|||0000-0003-2145-3669
Viguri Fuente, Javier Rufino|||0000-0002-6658-0429
author Martín Torre, María del Camino
author_facet Martín Torre, María del Camino
Cifrián Bemposta, Eva
Ruiz Gutiérrez, Gema
Galán Corta, Berta|||0000-0003-2145-3669
Viguri Fuente, Javier Rufino|||0000-0002-6658-0429
author_role author
author2 Cifrián Bemposta, Eva
Ruiz Gutiérrez, Gema
Galán Corta, Berta|||0000-0003-2145-3669
Viguri Fuente, Javier Rufino|||0000-0002-6658-0429
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Kinetic modelling
HNO3 and CO2 acidification
Contaminant release
Resuspension
pH-static leaching
Oxic and anoxic sediment
topic Kinetic modelling
HNO3 and CO2 acidification
Contaminant release
Resuspension
pH-static leaching
Oxic and anoxic sediment
description Carbon dioxide (CO2) Capture and Storage (CCS) is a technology to reduce the emissions of this gas to the atmosphere by sequestering it in geological formations. In the case of offshore storage, unexpected CO2 leakages will acidify the marine environment. Reductions of the pH might be also caused by anthropogenic activities or natural events such as acid spills and dredging operations or storms and floods. Changes in the pH of the marine environment will trigger the mobilisation of elements trapped in contaminated shallow sediments with unclear redox boundary. Trace element (As, Cd, Cr, Cu, Ni, Pb and Zn) release from anoxic and oxic estuarine sediment is analysed and modelled under different laboratory acidification conditions using HNO3 (l) and CO2 (g): acidification at pH = 6.5 as worst-case scenario in events of CO2 leakages and acid spills, and acidification at pH = 7.0 as a seawater scenario under CO2 leakages, acid spills, as well as sediment resuspension. The prediction of metal leaching behaviour appear to require sediment specific and site specific tools. In the present work it is demonstrated that the proposed three in-series reactions model predicts the process kinetics of the studied elements under different simulated environmental conditions (oxidation levels and acid sources). Differences between HNO3 and CO2 acidification are analysed through the influence of the CO2 gas on the ionic competition of the medium. The acidification with CO2 provokes higher released concentrations from the oxic sediment than from the anoxic sediment, except in the case of Zn, which influences the release of the other studied elements. Slight acidification can endanger the aquatic environment through an important mobilisation of contaminants. The obtained prediction of the contaminant release from sediment (kinetic parameters and maximum concentrations) can contribute to the exposure assessment stage for risk management and preincidental planning in accidental CO2 leakages and chemical spills scenarios.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-09-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/13231
url http://hdl.handle.net/10902/13231
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Academic Press
publisher.none.fl_str_mv Academic Press
dc.source.none.fl_str_mv Journal of Environmental Management, 2017, 199, 211-221
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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