Separation characteristics of acetic acid-water mixtures by pervaporation using poly(vinyl alcohol) membranes modified with malic acid

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dc.contributor.authorIşıklan, Nuran
dc.contributor.authorŞanlı, Oya
dc.date.accessioned2020-06-25T17:40:25Z
dc.date.available2020-06-25T17:40:25Z
dc.date.issued2005
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThe pervaporation separation of acetic acid-water mixture was carried out using poly(vinyl alcohol) (PVA) membranes modified using malic acid (MA). The effects of PVA/MA ratio, membrane thickness, operating temperature, feed concentration on the transmembrane permeation rate and separation factor were investigated. Optimum PVA/MA ratio was determined as 85/15 (v/v) for 20 wt.% acetic acid mixtures at 40 degrees C. The influence of membrane thickness on the separation factor and the permeation rate was studied in the range of 50-100 mu m at constant acetic acid concentration. It was observed that separation factor was independent of membrane thickness below a limit value of 70 mu m and permeation rate was found to be inversely proportional to the membrane thickness. The prepared membranes were also tested to separate various compositions of acetic acid-water mixtures with 20-90 wt.% acetic acid content at 40 degrees C. Typically, separation factor of 670 and total permeation rate of 4.8 x 10(-2) kg/m(2) h was obtained for 90 wt.% acetic acid concentration in the feed. Arrhenius-type relation and activation energy of 41 kJ/mol was also found for acetic acid-water mixtures. (c) 2005 Elsevier B.V. All rights reserved.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1016/j.cep.2005.01.005
dc.identifier.endpage1027en_US
dc.identifier.issn0255-2701
dc.identifier.issn1873-3204
dc.identifier.issue9en_US
dc.identifier.scopus2-s2.0-18844380469
dc.identifier.scopusqualityQ1
dc.identifier.startpage1019en_US
dc.identifier.urihttps://doi.org/10.1016/j.cep.2005.01.005
dc.identifier.urihttps://hdl.handle.net/20.500.12587/3430
dc.identifier.volume44en_US
dc.identifier.wosWOS:000229655000012
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Saen_US
dc.relation.ispartofChemical Engineering And Processing-Process Intensification
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectpervaporationen_US
dc.subjectseparationen_US
dc.subjectpoly(vinyl alcohol) membranesen_US
dc.subjectcross-linkingen_US
dc.subjectacetic acid-water separationen_US
dc.titleSeparation characteristics of acetic acid-water mixtures by pervaporation using poly(vinyl alcohol) membranes modified with malic aciden_US
dc.typeArticle

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