Fabrication and Application of Silicotungstic Acid/Polyvinyl Alcohol and Phosphomolybdic Acid/Polyvinyl Alcohol Hybrid Membrane for Pervaporative Dehydration of Isopropanol Solution

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dc.authorid0000-0001-5240-5876en_US
dc.contributor.authorÜnlü, Derya
dc.date.accessioned2021-03-20T20:12:28Z
dc.date.available2021-03-20T20:12:28Z
dc.date.issued2019
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Kimya Mühendisliği Bölümüen_US
dc.description.abstractHybrid membranes were prepared by loading silicotungstic acid (STA) and phosphomolybdic acid (PMA), into polyvinyl alcohol (PVA) matrix. The membranes were characterized by Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), contact angle meter, thermogravimetric analysis (TGA), and X-ray diffraction (XRD). Separation performance of hybrid PVA membranes was compared over that of neat PVA membrane, for dehydration of aqueous isopropanol mixtures by using the pervaporation (PV) process. The PV experiments were conducted over the feed water composition of 5-20 wt.%, temperature range of 3060 degrees C, and heteropolyacid amount of 5-20 wt%. Usage of hybrid membranes for separating water from the organic solvents, results in high flux and selectivity values. Of all the membranes studied, 5 wt% STA loaded hybrid PVA membrane and 5 wt% PMA loaded hybrid PVA membrane, exhibited best separation performance. While flux and selectivity values are 0.499 kg/m(2)h and 12848 for 5 wt% STA loaded hybrid PVA membrane, these values are 0.471 kg/m(2)h and 74991 for 5 wt% PMA loaded hybrid PVA membrane. Flux and selectivity values of neat PVA membrane are quite lower, as compared to the hybrid membranes. Neat PVA membrane has 0.360 kg/m(2)h of flux, and 36 of selectivity values. From this study, it is concluded that the selectivity and flux values of hybrid membranes, are rather higher than the neat PVA membrane.en_US
dc.identifier.doi10.1007/s13233-019-7134-0en_US
dc.identifier.endpage1008en_US
dc.identifier.issn1598-5032
dc.identifier.issn2092-7673
dc.identifier.issue10en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage998en_US
dc.identifier.urihttp://doi.org/10.1007/s13233-019-7134-0
dc.identifier.urihttps://hdl.handle.net/20.500.12885/575
dc.identifier.volume27en_US
dc.identifier.wosWOS:000492423200009en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÜnlü, Derya
dc.language.isoenen_US
dc.publisherPolymer Soc Koreaen_US
dc.relation.ispartofMacromolecular Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectheteropolyaciden_US
dc.subjecthybrid membraneen_US
dc.subjectpervaporationen_US
dc.subjectphosphomolybdic aciden_US
dc.subjectsilicotungstic aciden_US
dc.titleFabrication and Application of Silicotungstic Acid/Polyvinyl Alcohol and Phosphomolybdic Acid/Polyvinyl Alcohol Hybrid Membrane for Pervaporative Dehydration of Isopropanol Solutionen_US
dc.typeArticleen_US

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