Influence of membrane-solution interface on the selectivity of SnO2 ultrafiltration membranes

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dc.contributor.authorSantos, LRB
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.authorLarbot, A.
dc.contributor.authorPersin, M.
dc.contributor.authorPulcinelli, Sandra Helena [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Montpellier 2
dc.date.accessioned2014-05-20T15:30:06Z
dc.date.available2014-05-20T15:30:06Z
dc.date.issued2001-03-01
dc.description.abstractSnO2 supported membranes, presenting 3.0 nm average pore size, have been produced by sol casting on alumina tubular substrate using aqueous colloidal suspensions prepared by sol-gel route. The selectivity and flux throughout SnO2 membrane were analyzed by permeation experiments, using a laboratory tangential filtration pilot equipped with a monotubular membrane. To evaluate the effect of the surface charge at the membrane-solution interface, aqueous salt solutions (NaCl, Na2SO4, CaCl, and CaSO4) of different ionic strength have been filtered and the results correlated with the values of zeta potential measured at several pH. The results show that the retention coefficient is dependent on the electrolyte present in aqueous solution decreasing as: (dication, monoanion) > (monocation, monoanion) approximate to (monocation, dianion) > (dication, dianion). The surface charge and the cation adsorption capacity play a determinant role in these selectivity sequences. (C) 2001 Elsevier B.V. B.V. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14800970 Araraquara, SP, Brazil
dc.description.affiliationUniv Montpellier 2, ENSCM, UMR 5635, Lab Mat & Procedes Membranaire, F-34296 Montpellier 5, France
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800970 Araraquara, SP, Brazil
dc.format.extent17-22
dc.identifierhttp://dx.doi.org/10.1016/S1383-5866(00)00148-9
dc.identifier.citationSeparation and Purification Technology. Amsterdam: Elsevier B.V., v. 22-3, n. 1-3, p. 17-22, 2001.
dc.identifier.doi10.1016/S1383-5866(00)00148-9
dc.identifier.issn1383-5866
dc.identifier.lattes5584298681870865
dc.identifier.lattes9971202585286967
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.urihttp://hdl.handle.net/11449/39540
dc.identifier.wosWOS:000167129000002
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSeparation and Purification Technology
dc.relation.ispartofjcr3.927
dc.relation.ispartofsjr1,093
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSnO2 membranespt
dc.subjectultrafiltrationpt
dc.subjectsol-gel processpt
dc.subjectzeta potentialpt
dc.subjectretention coefficientspt
dc.titleInfluence of membrane-solution interface on the selectivity of SnO2 ultrafiltration membranesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9971202585286967
unesp.author.lattes5584298681870865[2]
unesp.author.orcid0000-0002-8356-8093[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Físico Química - IQ