Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites

Detalhes bibliográficos
Autor(a) principal: Figueiredo, Hugo
Data de Publicação: 2014
Outros Autores: Quintelas, C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: https://hdl.handle.net/1822/31468
Resumo: This review aims to present a global view of the efforts conducted to convert zeolites into efficient supports for the removal of heavy metal oxyanions. Despite lacking affinity for these species, due to inherent charge repulsion between zeolite framework and anionic species, zeolites have still received considerable attention from the scientific community, since their versatility allowed tailoring them to answer specific requirements. Different processes for the removal and recovery of toxic metals based on zeolites have been presented. These processes resort to modification of the zeolite surface to allow direct adsorption of oxyanions, or by combination with reducing agents for oxyanions that allow ion-exchange with the converted species by the zeolite itself. In order to testify zeolite versatility, as well as covering the wide array of physicochemical constraints that oxyanions offer, chromium and arsenic oxyanions were selected as model compounds for a review of treatment/remediation strategies, based on zeolite modification.
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spelling Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolitesZeoliteChromiumArsenicScience & TechnologyThis review aims to present a global view of the efforts conducted to convert zeolites into efficient supports for the removal of heavy metal oxyanions. Despite lacking affinity for these species, due to inherent charge repulsion between zeolite framework and anionic species, zeolites have still received considerable attention from the scientific community, since their versatility allowed tailoring them to answer specific requirements. Different processes for the removal and recovery of toxic metals based on zeolites have been presented. These processes resort to modification of the zeolite surface to allow direct adsorption of oxyanions, or by combination with reducing agents for oxyanions that allow ion-exchange with the converted species by the zeolite itself. In order to testify zeolite versatility, as well as covering the wide array of physicochemical constraints that oxyanions offer, chromium and arsenic oxyanions were selected as model compounds for a review of treatment/remediation strategies, based on zeolite modification.Cristina Quintelas is thankful to Fundacao para a Ciencia e Tecnologia (FCT, Portugal) for funding the CEB researcher unit at the University of Minho and thanks the Project "BioInd - Biotechnology and Bioengineering for improved Industrial and Agro-Food processes, REF. NORTE-07-0124-FEDER-000028" Co-funded by the Programa Operacional Regional do Norte (ON.2-O Novo Norte), QREN, FEDER for her reseach grant. Hugo Figueiredo would like to express his gratitude to FCT, Portugal, for the concession of his former PhD grant (ref. SFRH/BD/28201/2006). Cristina Quintelas would like to express her gratitude to FCT, Portugal, for the concession of her former PhD and Post-Doc grants (SFRH/BD/8646/2002 and SFRH/BPD/32113/2006, respectively). Authors are also thankful to Drs Isabel Neves and Teresa Tavares for their former supervision.Elsevier B.V.Universidade do MinhoFigueiredo, HugoQuintelas, C.20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/31468engFigueiredo, Hugo; Quintelas, C., Tailored zeolites for the removal of metal oxyanions: Overcoming intrinsic limitations of zeolites. Journal of Hazardous Materials, 274, 287-299, 20140304-389410.1016/j.jhazmat.2014.04.01224794984info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-04-12T04:30:40Zoai:repositorium.sdum.uminho.pt:1822/31468Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T15:17:34.945940Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
title Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
spellingShingle Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
Figueiredo, Hugo
Zeolite
Chromium
Arsenic
Science & Technology
title_short Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
title_full Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
title_fullStr Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
title_full_unstemmed Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
title_sort Tailored zeolites for the removal of metal oxyanions : overcoming intrinsic limitations of zeolites
author Figueiredo, Hugo
author_facet Figueiredo, Hugo
Quintelas, C.
author_role author
author2 Quintelas, C.
author2_role author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Figueiredo, Hugo
Quintelas, C.
dc.subject.por.fl_str_mv Zeolite
Chromium
Arsenic
Science & Technology
topic Zeolite
Chromium
Arsenic
Science & Technology
description This review aims to present a global view of the efforts conducted to convert zeolites into efficient supports for the removal of heavy metal oxyanions. Despite lacking affinity for these species, due to inherent charge repulsion between zeolite framework and anionic species, zeolites have still received considerable attention from the scientific community, since their versatility allowed tailoring them to answer specific requirements. Different processes for the removal and recovery of toxic metals based on zeolites have been presented. These processes resort to modification of the zeolite surface to allow direct adsorption of oxyanions, or by combination with reducing agents for oxyanions that allow ion-exchange with the converted species by the zeolite itself. In order to testify zeolite versatility, as well as covering the wide array of physicochemical constraints that oxyanions offer, chromium and arsenic oxyanions were selected as model compounds for a review of treatment/remediation strategies, based on zeolite modification.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/31468
url https://hdl.handle.net/1822/31468
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Figueiredo, Hugo; Quintelas, C., Tailored zeolites for the removal of metal oxyanions: Overcoming intrinsic limitations of zeolites. Journal of Hazardous Materials, 274, 287-299, 2014
0304-3894
10.1016/j.jhazmat.2014.04.012
24794984
dc.rights.driver.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 B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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