Major hydrogeochemical processes in an acid mine drainage affected estuary

This study provides geochemical data with the aim of identifying and quantifying the main processes occurring in an Acid Mine Drainage (AMD) affected estuary. With that purpose, water samples of the Huelva estuary were collected during a tidal half-cycle and ion-ion plots and geochemical modeling we...

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Detalles Bibliográficos
Autores: Asta, María P., Calleja, Maria Ll., Pérez-López, Rafael, Auqué, Luis F.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/377584
Acceso en línea:http://hdl.handle.net/10261/377584
https://api.elsevier.com/content/abstract/scopus_id/84922258388
Access Level:acceso abierto
Palabra clave:Ocean water
Acid water
Geochemical modeling
Huelva estuary
Hydrochemistry
Mixing
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spelling Major hydrogeochemical processes in an acid mine drainage affected estuaryAsta, María P.Calleja, Maria Ll.Pérez-López, RafaelAuqué, Luis F.Ocean waterAcid waterGeochemical modelingHuelva estuaryHydrochemistryMixingThis study provides geochemical data with the aim of identifying and quantifying the main processes occurring in an Acid Mine Drainage (AMD) affected estuary. With that purpose, water samples of the Huelva estuary were collected during a tidal half-cycle and ion-ion plots and geochemical modeling were performed to obtain a general conceptual model. Modeling results indicated that the main processes responsible for the hydrochemical evolution of the waters are: (i) the mixing of acid fluvial water with alkaline ocean water; (ii) precipitation of Fe oxyhydroxysulfates (schwertmannite) and hydroxides (ferrihydrite); (iii) precipitation of Al hydroxysulfates (jurbanite) and hydroxides (amorphous Al(OH)3); (iv) dissolution of calcite; and (v) dissolution of gypsum. All these processes, thermodynamically feasible in the light of their calculated saturation states, were quantified by mass-balance calculations and validated by reaction-path calculations. In addition, sorption processes were deduced by the non-conservative behavior of some elements (e.g., Cu and Zn).This research was supported by the project CGL2013-48460-C2-1-R from the Spanish Government. MPA has received economical support from the Spanish Ministry of Science and Innovation through a Research Contract from the “Juan de la Cierva” Subprograme (MICINN-JDC 2011). MLlC was supported by the Spanish Research Council (CSIC, Grant JAEDOC030-2010), co-funded by the Fondo Social Europeo (FSO). RPL also thanks the Spanish Minister of Science and Innovation and the “Ramón y Cajal” Subprogramme (MICINN-RYC 2011).Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/377584https://api.elsevier.com/content/abstract/scopus_id/84922258388reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//CGL2013-48460-C2-1-Rhttps://doi.org/10.1016/j.marpolbul.2014.11.023Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3775842026-05-22T06:33:51Z
dc.title.none.fl_str_mv Major hydrogeochemical processes in an acid mine drainage affected estuary
title Major hydrogeochemical processes in an acid mine drainage affected estuary
spellingShingle Major hydrogeochemical processes in an acid mine drainage affected estuary
Asta, María P.
Ocean water
Acid water
Geochemical modeling
Huelva estuary
Hydrochemistry
Mixing
title_short Major hydrogeochemical processes in an acid mine drainage affected estuary
title_full Major hydrogeochemical processes in an acid mine drainage affected estuary
title_fullStr Major hydrogeochemical processes in an acid mine drainage affected estuary
title_full_unstemmed Major hydrogeochemical processes in an acid mine drainage affected estuary
title_sort Major hydrogeochemical processes in an acid mine drainage affected estuary
dc.creator.none.fl_str_mv Asta, María P.
Calleja, Maria Ll.
Pérez-López, Rafael
Auqué, Luis F.
author Asta, María P.
author_facet Asta, María P.
Calleja, Maria Ll.
Pérez-López, Rafael
Auqué, Luis F.
author_role author
author2 Calleja, Maria Ll.
Pérez-López, Rafael
Auqué, Luis F.
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas (España)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ocean water
Acid water
Geochemical modeling
Huelva estuary
Hydrochemistry
Mixing
topic Ocean water
Acid water
Geochemical modeling
Huelva estuary
Hydrochemistry
Mixing
description This study provides geochemical data with the aim of identifying and quantifying the main processes occurring in an Acid Mine Drainage (AMD) affected estuary. With that purpose, water samples of the Huelva estuary were collected during a tidal half-cycle and ion-ion plots and geochemical modeling were performed to obtain a general conceptual model. Modeling results indicated that the main processes responsible for the hydrochemical evolution of the waters are: (i) the mixing of acid fluvial water with alkaline ocean water; (ii) precipitation of Fe oxyhydroxysulfates (schwertmannite) and hydroxides (ferrihydrite); (iii) precipitation of Al hydroxysulfates (jurbanite) and hydroxides (amorphous Al(OH)3); (iv) dissolution of calcite; and (v) dissolution of gypsum. All these processes, thermodynamically feasible in the light of their calculated saturation states, were quantified by mass-balance calculations and validated by reaction-path calculations. In addition, sorption processes were deduced by the non-conservative behavior of some elements (e.g., Cu and Zn).
publishDate 2015
dc.date.none.fl_str_mv 2015
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/377584
https://api.elsevier.com/content/abstract/scopus_id/84922258388
url http://hdl.handle.net/10261/377584
https://api.elsevier.com/content/abstract/scopus_id/84922258388
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//CGL2013-48460-C2-1-R
https://doi.org/10.1016/j.marpolbul.2014.11.023
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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