Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red

Detalhes bibliográficos
Autor(a) principal: Merino-Garcia, Ivan
Data de Publicação: 2020
Outros Autores: Kotoka, Francis, Portugal, Carla A. M., Crespo, João G., Velizarov, Svetlozar
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/114149
Resumo: PTDC/EQU-EPQ/29579/2017 UID/QUI/50006/2019
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spelling Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for redAnion exchange membranesAntifouling strategiesMonovalent permselective membranesPoly(acrylic) acid modificationReverse electrodialysisChemical Engineering (miscellaneous)Process Chemistry and TechnologyFiltration and SeparationPTDC/EQU-EPQ/29579/2017 UID/QUI/50006/2019The performance of anion-exchange membranes (AEMs) in Reverse Electrodialysis is hampered by both presence of multivalent ions and fouling phenomena, thus leading to reduced net power density. Therefore, we propose a monolayer surface modification procedure to functionalize Ralex-AEMs with poly(acrylic) acid (PAA) in order to (i) render a monovalent permselectivity, and (ii) minimize organic fouling. Membrane surface modification was carried out by putting heterogeneous AEMs in contact with a PAA-based aqueous solution for 24 h. The resulting modified membranes were firstly characterized by contact angle, water uptake, ion exchange capacity, fixed charge density, and swelling degree measurements, whereas their electrochemical responses were evaluated through cyclic voltammetry. Besides, their membrane electro-resistance was also studied via electrochemical impedance spectroscopy analyses. Finally, membrane permselectivity and fouling behavior in the presence of humic acid were evaluated through mass transport experiments using model NaCl containing solutions. The use of modified PAA-AEMs resulted in a significantly enhanced monovalent permselectivity (sulfate rejection improved by >35%) and membrane hydrophilicity (contact angle decreased by >15%) in comparison with the behavior of unmodified Ralex-AEMs, without compromising the membrane electro-resistance after modification, thus demonstrating the technical feasibility of the proposed membrane modification procedure. This study may therefore provide a feasible way for achieving an improved Reverse Electrodialysis process efficiency.LAQV@REQUIMTEDQ - Departamento de QuímicaRUNMerino-Garcia, IvanKotoka, FrancisPortugal, Carla A. M.Crespo, João G.Velizarov, Svetlozar2021-03-19T23:28:50Z2020-06-262020-06-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/114149eng0076-6356PURE: 28469464https://doi.org/10.3390/membranes10060134info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:56:52Zoai:run.unl.pt:10362/114149Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:42:27.793412Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
title Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
spellingShingle Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
Merino-Garcia, Ivan
Anion exchange membranes
Antifouling strategies
Monovalent permselective membranes
Poly(acrylic) acid modification
Reverse electrodialysis
Chemical Engineering (miscellaneous)
Process Chemistry and Technology
Filtration and Separation
title_short Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
title_full Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
title_fullStr Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
title_full_unstemmed Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
title_sort Characterization of poly(Acrylic) acid-modified heterogenous anion exchange membranes with improved monovalent permselectivity for red
author Merino-Garcia, Ivan
author_facet Merino-Garcia, Ivan
Kotoka, Francis
Portugal, Carla A. M.
Crespo, João G.
Velizarov, Svetlozar
author_role author
author2 Kotoka, Francis
Portugal, Carla A. M.
Crespo, João G.
Velizarov, Svetlozar
author2_role author
author
author
author
dc.contributor.none.fl_str_mv LAQV@REQUIMTE
DQ - Departamento de Química
RUN
dc.contributor.author.fl_str_mv Merino-Garcia, Ivan
Kotoka, Francis
Portugal, Carla A. M.
Crespo, João G.
Velizarov, Svetlozar
dc.subject.por.fl_str_mv Anion exchange membranes
Antifouling strategies
Monovalent permselective membranes
Poly(acrylic) acid modification
Reverse electrodialysis
Chemical Engineering (miscellaneous)
Process Chemistry and Technology
Filtration and Separation
topic Anion exchange membranes
Antifouling strategies
Monovalent permselective membranes
Poly(acrylic) acid modification
Reverse electrodialysis
Chemical Engineering (miscellaneous)
Process Chemistry and Technology
Filtration and Separation
description PTDC/EQU-EPQ/29579/2017 UID/QUI/50006/2019
publishDate 2020
dc.date.none.fl_str_mv 2020-06-26
2020-06-26T00:00:00Z
2021-03-19T23:28:50Z
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 http://hdl.handle.net/10362/114149
url http://hdl.handle.net/10362/114149
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0076-6356
PURE: 28469464
https://doi.org/10.3390/membranes10060134
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.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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