Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth

This paper investigates the use of electrochemical techniques for the removal of a common herbicide, bentazone, from water streams using a carbon-based electrode. Activated carbon cloth with high surface area and narrow micropores was used as electrode. For a better understanding of the process, ads...

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Detalles Bibliográficos
Autores: Ovín Ania, María Concepción, Béguin, François
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2007
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/98676
Acceso en línea:http://hdl.handle.net/10261/98676
Access Level:acceso abierto
Palabra clave:Electrosorption
Electrodesorption
Activated carbon cloth
Pesticides
Liquid phase adsorption
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spelling Electrochemically assisted adsorption/desorption of bentazone on activated carbon clothOvín Ania, María ConcepciónBéguin, FrançoisElectrosorptionElectrodesorptionActivated carbon clothPesticidesLiquid phase adsorptionThis paper investigates the use of electrochemical techniques for the removal of a common herbicide, bentazone, from water streams using a carbon-based electrode. Activated carbon cloth with high surface area and narrow micropores was used as electrode. For a better understanding of the process, adsorption was investigated under both open circuit and controlled polarization conditions, the latter in anodic and cathodic directions. It was found that anodic polarization enhances the kinetics of adsorption of the herbicide on the carbon cloth, the extent of which is strongly related to the applied current value. At converse, cathodic polarization induces the reversible desorption of the compound. Moreover, in-situ UV spectra recording on the solution did not show any structural change of the herbicide upon polarization, demonstrating the reversibility of the process for the regeneration of the adsorbent and the recovery of the compound. Based on these experiments, a mechanism is proposed to interpret the reversible sorption of bentazone under polarization.The authors thank Actitex, France, for kindly supplying the activated carbon cloth. COA thanks the CSIC I3P Program, co-financed by the European Social Fund, for a postdoctoral contract. Dr. Khomenko is also acknowledged for fruitful discussionsPeer reviewedSpringer NatureConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/98676reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s10450-007-9024-6Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/986762026-05-22T06:33:51Z
dc.title.none.fl_str_mv Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
title Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
spellingShingle Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
Ovín Ania, María Concepción
Electrosorption
Electrodesorption
Activated carbon cloth
Pesticides
Liquid phase adsorption
title_short Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
title_full Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
title_fullStr Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
title_full_unstemmed Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
title_sort Electrochemically assisted adsorption/desorption of bentazone on activated carbon cloth
dc.creator.none.fl_str_mv Ovín Ania, María Concepción
Béguin, François
author Ovín Ania, María Concepción
author_facet Ovín Ania, María Concepción
Béguin, François
author_role author
author2 Béguin, François
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Electrosorption
Electrodesorption
Activated carbon cloth
Pesticides
Liquid phase adsorption
topic Electrosorption
Electrodesorption
Activated carbon cloth
Pesticides
Liquid phase adsorption
description This paper investigates the use of electrochemical techniques for the removal of a common herbicide, bentazone, from water streams using a carbon-based electrode. Activated carbon cloth with high surface area and narrow micropores was used as electrode. For a better understanding of the process, adsorption was investigated under both open circuit and controlled polarization conditions, the latter in anodic and cathodic directions. It was found that anodic polarization enhances the kinetics of adsorption of the herbicide on the carbon cloth, the extent of which is strongly related to the applied current value. At converse, cathodic polarization induces the reversible desorption of the compound. Moreover, in-situ UV spectra recording on the solution did not show any structural change of the herbicide upon polarization, demonstrating the reversibility of the process for the regeneration of the adsorbent and the recovery of the compound. Based on these experiments, a mechanism is proposed to interpret the reversible sorption of bentazone under polarization.
publishDate 2007
dc.date.none.fl_str_mv 2007
2014
2014
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/10261/98676
url http://hdl.handle.net/10261/98676
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s10450-007-9024-6
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
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 15.812429

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