Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species

This study involves the preparation and optimization of polymer inclusion membranes (PIMs) based on the polymer cellulose triacetate and the extractant (carrier) Aliquat 336 (a mixture of quaternary ammonium chlorides) for the transport of inorganic As species (arsenite and arsenate) from their aque...

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Detalles Bibliográficos
Autores: Güell Martí, Raquel, Kolev, Spas D., Benavente, Juana, Salvadó Martín, Victòria, Fontàs Rigau, Clàudia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/12338
Acceso en línea:http://hdl.handle.net/10256/12338
Access Level:acceso embargado
Palabra clave:Espectroscòpia d'impedància
Impedance spectroscopy
Separació (Tecnologia)
Separation (Technology)
Membranes (Tecnologia)
Membranes (Technology)
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spelling Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As speciesGüell Martí, RaquelKolev, Spas D.Benavente, JuanaSalvadó Martín, VictòriaFontàs Rigau, ClàudiaEspectroscòpia d'impedànciaImpedance spectroscopySeparació (Tecnologia)Separation (Technology)Membranes (Tecnologia)Membranes (Technology)This study involves the preparation and optimization of polymer inclusion membranes (PIMs) based on the polymer cellulose triacetate and the extractant (carrier) Aliquat 336 (a mixture of quaternary ammonium chlorides) for the transport of inorganic As species (arsenite and arsenate) from their aqueous solutions. The influence of the composition of the membranes on its extraction and transport properties was investigated. Better membrane performance was obtained when the membranes did not contain plasticizer and the concentration of the extractant was high. Under these conditions arsenate (As(V)) could be quantitatively separated from As(III) within 5 h even in the presence of common anions (i.e. chloride, phosphate, nitrate, sulfate and carbonate) often encountered in natural waters and industrial and domestic wastewaters.Electrical impedance spectroscopy measurements allowed the determination of the dielectric constant and conductivity values of the PIMs of interest. These results suggested that the extracted As(V) species was HAsO4 2- which was further transported across the membrane by a hopping mechanism, counter currently to the transport of the chloride anions present at a high concentration in the stripping solution.The overall performance of the proposed PIM in terms of stability, selectivity and permeability compared favorably to those of an Aliquat 336 based supported liquid membrane and a commercial multi-valent anion exchange membraneThis work was supported by the Spanish Ministerio de Ciencia e Inovación, through Project (CTM2008-06847-C02 02/TECNO). R. Güell gratefully acknowledges a grant awarded by the University of Girona (Ref. BR06/10)ElsevierMinisterio de Educación y Ciencia (Espanya)infoinfo2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/12338http://hdl.handle.net/10256/12338© Journal of Membrane Science, 2011, vol. 383, núm. 1-2, p. 88-95Articles publicats (D-Q)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.memsci.2011.08.037info:eu-repo/semantics/altIdentifier/issn/0376-7388info:eu-repo/grantAgreement/MICINN//CTM2008-06847-C02-02Tots els drets reservatsinfo:eu-repo/semantics/embargoedAccessoai:recercat.cat:10256/123382026-05-29T05:05:01Z
dc.title.none.fl_str_mv Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
title Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
spellingShingle Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
Güell Martí, Raquel
Espectroscòpia d'impedància
Impedance spectroscopy
Separació (Tecnologia)
Separation (Technology)
Membranes (Tecnologia)
Membranes (Technology)
title_short Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
title_full Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
title_fullStr Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
title_full_unstemmed Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
title_sort Development and characterization of polymer inclusion membranes for the separation and speciation of inorganic As species
dc.creator.none.fl_str_mv Güell Martí, Raquel
Kolev, Spas D.
Benavente, Juana
Salvadó Martín, Victòria
Fontàs Rigau, Clàudia
author Güell Martí, Raquel
author_facet Güell Martí, Raquel
Kolev, Spas D.
Benavente, Juana
Salvadó Martín, Victòria
Fontàs Rigau, Clàudia
author_role author
author2 Kolev, Spas D.
Benavente, Juana
Salvadó Martín, Victòria
Fontàs Rigau, Clàudia
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Educación y Ciencia (Espanya)
dc.subject.none.fl_str_mv Espectroscòpia d'impedància
Impedance spectroscopy
Separació (Tecnologia)
Separation (Technology)
Membranes (Tecnologia)
Membranes (Technology)
topic Espectroscòpia d'impedància
Impedance spectroscopy
Separació (Tecnologia)
Separation (Technology)
Membranes (Tecnologia)
Membranes (Technology)
description This study involves the preparation and optimization of polymer inclusion membranes (PIMs) based on the polymer cellulose triacetate and the extractant (carrier) Aliquat 336 (a mixture of quaternary ammonium chlorides) for the transport of inorganic As species (arsenite and arsenate) from their aqueous solutions. The influence of the composition of the membranes on its extraction and transport properties was investigated. Better membrane performance was obtained when the membranes did not contain plasticizer and the concentration of the extractant was high. Under these conditions arsenate (As(V)) could be quantitatively separated from As(III) within 5 h even in the presence of common anions (i.e. chloride, phosphate, nitrate, sulfate and carbonate) often encountered in natural waters and industrial and domestic wastewaters.Electrical impedance spectroscopy measurements allowed the determination of the dielectric constant and conductivity values of the PIMs of interest. These results suggested that the extracted As(V) species was HAsO4 2- which was further transported across the membrane by a hopping mechanism, counter currently to the transport of the chloride anions present at a high concentration in the stripping solution.The overall performance of the proposed PIM in terms of stability, selectivity and permeability compared favorably to those of an Aliquat 336 based supported liquid membrane and a commercial multi-valent anion exchange membrane
publishDate 2011
dc.date.none.fl_str_mv 2011
info
info
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/12338
http://hdl.handle.net/10256/12338
url http://hdl.handle.net/10256/12338
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.memsci.2011.08.037
info:eu-repo/semantics/altIdentifier/issn/0376-7388
info:eu-repo/grantAgreement/MICINN//CTM2008-06847-C02-02
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/embargoedAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv embargoedAccess
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 © Journal of Membrane Science, 2011, vol. 383, núm. 1-2, p. 88-95
Articles publicats (D-Q)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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