Mohd Nawawi, Mohd Ghazali and Hassan, Hashim (2004) Improved pervaporation performance of locally-produced chitosan membranes. In: Regional Symposium on Membrane Science and Technology 2004, 21-25 April 2004, Puteri Pan Pacific Hotel, Johor Bahru, Johor, Malaysia.
In this study, the pervaporation membranes were prepared from locally-produced chitosan polymer. Chitosan were extracted from domestic shrimp shells which can be found abundantly locally via a simple method using strong acid and alkaline treatments. Chitosan membranes were prepared by solution casting method. Chitosan membranes were modified by blending with Poly(vinyl alcohol)(PVA) and incorporation of zeolite 13 X in the membrane matrix. The membrane performances were studied in the pervaporation dehydration of isopropanol-water mixtures. From our results, chitosan membranes showed preferential permeation to water for the whole feed compositions. The overall pervaporation performance of the modified membranes were compared based on the pervaporation separation index(PSI). It was found that the chitosan membranes performance were improved upon modifications: chitosan/poly(vinyl alcohol) blended and chitosan/ zeolite blended membranes showed a higher pervaporation separation index (PSI) as compared to the unmodified chitosan membranes.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||Blending, chitosan, isopropanol-water, pervaporation, zeolite|
|Subjects:||T Technology > T Technology (General)|
|Divisions:||Chemical and Natural Resources Engineering (Formerly known)|
|Deposited By:||Norhani Jusoh|
|Deposited On:||03 Sep 2008 09:54|
|Last Modified:||01 Jun 2010 15:41|
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