The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8

[ENG] The removal of chromium(III) from alkaline solutions by the anion exchange resin Dowex 1x8 was investigated. Several experimental variables were considered in this investigation: hydrodynamic conditions applied on the system, temperature, NaOH concentration in the aqueous feed and resin dosage...

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Detalles Bibliográficos
Autor: Alguacil, Francisco José
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/417549
Acceso en línea:http://hdl.handle.net/10261/417549
Access Level:acceso abierto
Palabra clave:Cromo(III)
Disoluciones alcalinas
Dowex 1x8
Efluentes líquidos
Eliminación
Nanotubos de carbono de pared múltiple
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
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network_acronym_str ES
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repository_id_str
spelling The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8Alguacil, Francisco JoséCromo(III)Disoluciones alcalinasDowex 1x8Efluentes líquidosEliminaciónNanotubos de carbono de pared múltiplehttp://metadata.un.org/sdg/9Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation[ENG] The removal of chromium(III) from alkaline solutions by the anion exchange resin Dowex 1x8 was investigated. Several experimental variables were considered in this investigation: hydrodynamic conditions applied on the system, temperature, NaOH concentration in the aqueous feed and resin dosage. Based on the experimental results several models were used to a better understanding of the anion exchange process, thus, it was found that this exchange process was governed by the particle (resin bead) diffusion rate law, and follows the pseudo-second order kinetic model. Also, chromium(III) uptake onto the resin responded well to the Langmuir type-2 isotherm in a spontaneous process. In terms of chromium(III) uptake, the resin presented a better metal-load that multiwalled carbon nanotubes. HCl solutions presented acceptable characteristics to be used as eluents for chromium(III) loaded onto the resin.[ES] Se ha investigado la eliminación de cromo(III), en disoluciones alcalinas, mediante el uso de la resina intercambiadora de aniones Dowex 1x8. La investigación se ha llevado a cabo bajo distintas variables experimentales: condiciones hidrodinámicas aplicadas sobre el sistema, temperatura, concentración de NaOH en la disolución acuosa y dosificación de la resina. Con el fin de entender mejor este sistema de cambio iónico, los datos experimentales se han tratado usando distintos modelos, asi, el proceso de carga del metal en la resina esta regido por el modelo de difusión en la partícula de resina, y sigue el modelo cinético de pseudo-segundo orden. La carga del metal sobre la resina obedece a la isoterma de Langmuir tipo-2 de forma espontánea. En estos términos de carga, la resina Dowex 1x8 presenta mejores características que los nanotubos de carbono de pared múltiple. Las disoluciones de HCl son adecuadas para la elución del metal desde la resina cargada con este.To the CSIC (Spain) for support.Peer reviewedEditorial CSICConsejo Superior de Investigaciones Científicas (España)Francisco José Alguacil [0000-0002-0247-3384]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/417549reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3989/revmetalm.e257.1693Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4175492026-05-22T06:33:51Z
dc.title.none.fl_str_mv The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
title The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
spellingShingle The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
Alguacil, Francisco José
Cromo(III)
Disoluciones alcalinas
Dowex 1x8
Efluentes líquidos
Eliminación
Nanotubos de carbono de pared múltiple
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
title_short The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
title_full The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
title_fullStr The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
title_full_unstemmed The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
title_sort The removal of toxic metals from liquid effluents by ion exchange resins. Part XIX: Chromium(III)/OH-/Dowex 1x8
dc.creator.none.fl_str_mv Alguacil, Francisco José
author Alguacil, Francisco José
author_facet Alguacil, Francisco José
author_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Francisco José Alguacil [0000-0002-0247-3384]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Cromo(III)
Disoluciones alcalinas
Dowex 1x8
Efluentes líquidos
Eliminación
Nanotubos de carbono de pared múltiple
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
topic Cromo(III)
Disoluciones alcalinas
Dowex 1x8
Efluentes líquidos
Eliminación
Nanotubos de carbono de pared múltiple
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
description [ENG] The removal of chromium(III) from alkaline solutions by the anion exchange resin Dowex 1x8 was investigated. Several experimental variables were considered in this investigation: hydrodynamic conditions applied on the system, temperature, NaOH concentration in the aqueous feed and resin dosage. Based on the experimental results several models were used to a better understanding of the anion exchange process, thus, it was found that this exchange process was governed by the particle (resin bead) diffusion rate law, and follows the pseudo-second order kinetic model. Also, chromium(III) uptake onto the resin responded well to the Langmuir type-2 isotherm in a spontaneous process. In terms of chromium(III) uptake, the resin presented a better metal-load that multiwalled carbon nanotubes. HCl solutions presented acceptable characteristics to be used as eluents for chromium(III) loaded onto the resin.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/417549
url http://hdl.handle.net/10261/417549
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3989/revmetalm.e257.1693
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Editorial CSIC
publisher.none.fl_str_mv Editorial CSIC
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
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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