Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes

The main objective of this research was to develop polyion complex composite (PIC) membranes consisting of chitosan/sodium alginate (SA) for the pervaporation separation of methyl tert-butyl ether (MTBE)/methanol mixtures. The PIC membranes were fabricated by casting homogeneous chitosan/SA solution...

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Main Author:	Jusoh @ Alias, Nor Zamiha
Format:	Thesis
Language:	English
Published:	2009
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/36573/1/NorZamihaJusohMFKKKSA2009.pdf
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spelling	my-utm-ep.365732018-06-25T09:05:55Z Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes 2009-03 Jusoh @ Alias, Nor Zamiha TP Chemical technology The main objective of this research was to develop polyion complex composite (PIC) membranes consisting of chitosan/sodium alginate (SA) for the pervaporation separation of methyl tert-butyl ether (MTBE)/methanol mixtures. The PIC membranes were fabricated by casting homogeneous chitosan/SA solution onto polysulfone (PS) which was used as a porous support. The chitosan and sodium alginate solutions were prepared separately by using dilute acetic acid as the common solvent. The homogeneous chitosan/SA solution was prepared by mixing both the chitosan and SA solutions for 24 hours. The morphological structure of the membranes was studied using Scanning Electron Microscopy (SEM). The morphology study showed that the PIC membranes consisted of two layers. The top layer was dense which indicated that the two polymers were very homogenously intermixed and in the state of the polyion complex. The membranes were used for the separation of MTBE/methanol mixture via pervaporation. The separation performance of the chitosan/SA membrane was compared with that of composite chitosan membrane. The sodium alginate content incorporated in the PIC membrane enhanced the membrane performance in the pervaporation separation of MTBE/methanol mixtures. The overall pervaporation performances for the membranes were determined in term of pervaporation separation index (PSI). The PIC membranes showed higher PSI than that of the composite membrane especially at high feed MTBE concentrations. The optimum concentration of SA in membranes was found to be 1.5 wt. %. At this concentration of SA, the degree of swelling was 1.02 % with 42.5 wt. % MTBE sorbed in membrane while PSI increased from 946.9 g/m2.h (composite chitosan membrane) to 3211.8 g/m2.h. It was also found that a rise in operating temperature increased the permeation flux and separation factor. 2009-03 Thesis http://eprints.utm.my/id/eprint/36573/ http://eprints.utm.my/id/eprint/36573/1/NorZamihaJusohMFKKKSA2009.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:69209?site_name=Restricted Repository masters Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering Faculty of Chemical and Natural Resources Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Jusoh @ Alias, Nor Zamiha Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
description	The main objective of this research was to develop polyion complex composite (PIC) membranes consisting of chitosan/sodium alginate (SA) for the pervaporation separation of methyl tert-butyl ether (MTBE)/methanol mixtures. The PIC membranes were fabricated by casting homogeneous chitosan/SA solution onto polysulfone (PS) which was used as a porous support. The chitosan and sodium alginate solutions were prepared separately by using dilute acetic acid as the common solvent. The homogeneous chitosan/SA solution was prepared by mixing both the chitosan and SA solutions for 24 hours. The morphological structure of the membranes was studied using Scanning Electron Microscopy (SEM). The morphology study showed that the PIC membranes consisted of two layers. The top layer was dense which indicated that the two polymers were very homogenously intermixed and in the state of the polyion complex. The membranes were used for the separation of MTBE/methanol mixture via pervaporation. The separation performance of the chitosan/SA membrane was compared with that of composite chitosan membrane. The sodium alginate content incorporated in the PIC membrane enhanced the membrane performance in the pervaporation separation of MTBE/methanol mixtures. The overall pervaporation performances for the membranes were determined in term of pervaporation separation index (PSI). The PIC membranes showed higher PSI than that of the composite membrane especially at high feed MTBE concentrations. The optimum concentration of SA in membranes was found to be 1.5 wt. %. At this concentration of SA, the degree of swelling was 1.02 % with 42.5 wt. % MTBE sorbed in membrane while PSI increased from 946.9 g/m2.h (composite chitosan membrane) to 3211.8 g/m2.h. It was also found that a rise in operating temperature increased the permeation flux and separation factor.
format	Thesis
qualification_level	Master's degree
author	Jusoh @ Alias, Nor Zamiha
author_facet	Jusoh @ Alias, Nor Zamiha
author_sort	Jusoh @ Alias, Nor Zamiha
title	Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
title_short	Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
title_full	Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
title_fullStr	Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
title_full_unstemmed	Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
title_sort	pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering
granting_department	Faculty of Chemical and Natural Resources Engineering
publishDate	2009
url	http://eprints.utm.my/id/eprint/36573/1/NorZamihaJusohMFKKKSA2009.pdf
_version_	1747816436526481408

Pervaporation separation of methyl tert-butyl ether /methanol mixtures using polyion complex chitosan membranes

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