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Pervaporation of isopropanol-water mixture using poly(vinyl) alcohol-zsm-5 membranes

Chong, Woon Chan and Mohd Nawawi, Mohd Ghazali and Sadikin, Aziatul Niza (2008) Pervaporation of isopropanol-water mixture using poly(vinyl) alcohol-zsm-5 membranes. Jurnal Teknologi (49F). pp. 159-166. ISSN 0127-9696



The pervaporation separation of isopropanol-water mixture was carried out using poly(vinyl) alcohol (PVA) membrane incorporated with 0.2 wt% ZSM-5 zeolite. The manipulated variables were feed temperature and feed concentration. Initially, 5 wt% of PVA powder was dissolved in distilled water at 98 °C. The solution was stirred using magnetic stirrer for 1 hour to produce a homogenous solution. It was then cooled to room temperature before added with the zeolite. The PVA-zeolite solution was stirred for 24 hours at room temperature before it was casted on a porous support. The support layers were produced through phase inversion using casting solution of 12 wt% polysulphone, 11 wt% cellusolve and 77 wt% N,N-dimetil formamide (DMF). Finally, the modified composite membranes were produced by casting the PVA- zeolite solution on the porous polysulphone support layers. Pervaporation tests were conducted using SOLTEQ Pervaporation Bench Test Unit (Model: TR 12). The results showed the increase of water concentration in the feed and operating temperature, resulted in higher flux and lower selectivity. ZSM-5 filled PVA membrane showed potential as a separation medium for the pervaporation separation of isopropanol-water mixtures.

Item Type:Article
Uncontrolled Keywords:Pervaporation; poly(vinyl) alcohol; ZSM-5 zeolite; polysulphone; composite membranes
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:8669
Deposited By: Norhayati Abu Ruddin
Deposited On:06 May 2009 07:44
Last Modified:14 Oct 2010 04:46

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