Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation

The main objective of this research is to produce high performance nanofiltration (NF) hollow fiber membranes for Cyclodextrin Glycosyltransferase (CGTase) separation. For the first stage of this study, three types of spinning solution had been formulated by using titration method. These spinning so...

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主要作者: Jalil, Suhana
格式: Thesis
语言:English
出版: 2004
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spelling my-utm-ep.61512018-09-19T05:03:24Z Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation 2004-08 Jalil, Suhana TP Chemical technology The main objective of this research is to produce high performance nanofiltration (NF) hollow fiber membranes for Cyclodextrin Glycosyltransferase (CGTase) separation. For the first stage of this study, three types of spinning solution had been formulated by using titration method. These spinning solutions were formulated close to its cloud point (binodal line) in order to speed up the coagulation of nascent fibers so that the relaxation effect of molecular orientation was reduced. The dry/wet spinning process was applied in hollow fiber fabrication with water as bore fluid. At the second stage, hollow fibers were fabricated at four different type of dope extrusion rate (DER) ranging from 2.0 to 3.5 cm3/min. It was found that the optimum condition occurred at DER 2.5 cm3/min, which yields an optimal performance of sodium chloride rejection and better membrane morphology. The results exhibited that as the DER increased, the rejection value increases until critical level is achieved but the flux value gradually reduced. The optimized DER, at 2.5 cm3/min was selected to fabricate the fibers at different air gap length. Thus, by increasing air gap length, the rejection value is significantly increased. The results suggested that it is possible to separate the CGTase enzyme up to 99.11% with the flux of about 0.47 l/m2.h and enhance the NF hollow fiber membranes performance in CGTase separation by the approach proposed in this study. Finally, at the last stage, the produced NF membranes were characterized by using Scanning Electron Microscope (SEM) and Attenuated Total Reflection Fourier Transform Infrared (FTIR-ATR). Results revealed that phase inversion and rheological factors significantly influencing the separation performance of Polyethersulfone (PES) NF hollow fiber membranes. 2004-08 Thesis http://eprints.utm.my/id/eprint/6151/ http://eprints.utm.my/id/eprint/6151/1/SuhanaJalilMFKKKSA2004.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:62077 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
Jalil, Suhana
Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
description The main objective of this research is to produce high performance nanofiltration (NF) hollow fiber membranes for Cyclodextrin Glycosyltransferase (CGTase) separation. For the first stage of this study, three types of spinning solution had been formulated by using titration method. These spinning solutions were formulated close to its cloud point (binodal line) in order to speed up the coagulation of nascent fibers so that the relaxation effect of molecular orientation was reduced. The dry/wet spinning process was applied in hollow fiber fabrication with water as bore fluid. At the second stage, hollow fibers were fabricated at four different type of dope extrusion rate (DER) ranging from 2.0 to 3.5 cm3/min. It was found that the optimum condition occurred at DER 2.5 cm3/min, which yields an optimal performance of sodium chloride rejection and better membrane morphology. The results exhibited that as the DER increased, the rejection value increases until critical level is achieved but the flux value gradually reduced. The optimized DER, at 2.5 cm3/min was selected to fabricate the fibers at different air gap length. Thus, by increasing air gap length, the rejection value is significantly increased. The results suggested that it is possible to separate the CGTase enzyme up to 99.11% with the flux of about 0.47 l/m2.h and enhance the NF hollow fiber membranes performance in CGTase separation by the approach proposed in this study. Finally, at the last stage, the produced NF membranes were characterized by using Scanning Electron Microscope (SEM) and Attenuated Total Reflection Fourier Transform Infrared (FTIR-ATR). Results revealed that phase inversion and rheological factors significantly influencing the separation performance of Polyethersulfone (PES) NF hollow fiber membranes.
format Thesis
qualification_level Master's degree
author Jalil, Suhana
author_facet Jalil, Suhana
author_sort Jalil, Suhana
title Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
title_short Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
title_full Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
title_fullStr Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
title_full_unstemmed Development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (CGTase) separation
title_sort development of nanofiltration polyethersulfone hollow fiber membrane for cyclodextrin glycosyltransferase (cgtase) separation
granting_institution Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering
granting_department Faculty of Chemical and Natural Resources Engineering
publishDate 2004
url http://eprints.utm.my/id/eprint/6151/1/SuhanaJalilMFKKKSA2004.pdf
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