Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane

Polyesthersulfone (PES) hollow fiber membranes were prepared via the phase inversion process from dope solution containing PES, n-methylpyrrolidone (NMP), and polyvinylpyrrolidone (PVP). The effect of bore fluid flow rate (BFR) and bore fluid composition (BFC) on the morphology, permeability and sep...

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Main Author:	Lee, Sze Yean
Format:	Thesis
Language:	English
Published:	2008
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/9688/1/LeeSzeYeanMFKKKSA2008.pdf
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id	my-utm-ep.9688
record_format	uketd_dc
spelling	my-utm-ep.96882018-07-23T05:36:49Z Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane 2008-05 Lee, Sze Yean TP Chemical technology Polyesthersulfone (PES) hollow fiber membranes were prepared via the phase inversion process from dope solution containing PES, n-methylpyrrolidone (NMP), and polyvinylpyrrolidone (PVP). The effect of bore fluid flow rate (BFR) and bore fluid composition (BFC) on the morphology, permeability and separation performance of the spun UF membranes has been investigated. The influence of hypochlorite and microwave irradiation post treatment method was compared. Dry jet wet spinning process was the method chosen to fabricate the hollow fibers with an air gap of 10 cm. Water was used as external coagulant and the temperature was maintained at 14Â° Celsius. Solute separation experiments were conducted using polyethylene glycol. It was found that when the BFR is increased from 1.0 ml/min to 3.5 ml/min, the pure water permeation fluxes (PWP) increased from 0.14 L/ (m2.h.bar) to 1.29 L/ (m2.h.bar). The rejection rate of PEG decreased when BFR increased for all PEG solutions respectively. Characteristics of membranes using transport data revealed that the pore size of UF membranes increases as BFR increases. Experimental results also illustrated that PWP flux of the PES hollow fibers membranes spun with different percentage of NMP in its bore fluid slowly increases as the content increased from 20% NMP to 60% NMP but its rejection rate is decreased. The increasing solvent content in the bore fluid reduced the water activity and hence promoted the delayed demixing process during the membrane formation. Experimental results also revealed that the microwave post treatment produced membranes with better separation performance (approximately 10% higher) with smaller pore diameters in comparison to those post-treated with hypochlorite. 2008-05 Thesis http://eprints.utm.my/id/eprint/9688/ http://eprints.utm.my/id/eprint/9688/1/LeeSzeYeanMFKKKSA2008.pdf application/pdf en public 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 Lee, Sze Yean Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
description	Polyesthersulfone (PES) hollow fiber membranes were prepared via the phase inversion process from dope solution containing PES, n-methylpyrrolidone (NMP), and polyvinylpyrrolidone (PVP). The effect of bore fluid flow rate (BFR) and bore fluid composition (BFC) on the morphology, permeability and separation performance of the spun UF membranes has been investigated. The influence of hypochlorite and microwave irradiation post treatment method was compared. Dry jet wet spinning process was the method chosen to fabricate the hollow fibers with an air gap of 10 cm. Water was used as external coagulant and the temperature was maintained at 14Â° Celsius. Solute separation experiments were conducted using polyethylene glycol. It was found that when the BFR is increased from 1.0 ml/min to 3.5 ml/min, the pure water permeation fluxes (PWP) increased from 0.14 L/ (m2.h.bar) to 1.29 L/ (m2.h.bar). The rejection rate of PEG decreased when BFR increased for all PEG solutions respectively. Characteristics of membranes using transport data revealed that the pore size of UF membranes increases as BFR increases. Experimental results also illustrated that PWP flux of the PES hollow fibers membranes spun with different percentage of NMP in its bore fluid slowly increases as the content increased from 20% NMP to 60% NMP but its rejection rate is decreased. The increasing solvent content in the bore fluid reduced the water activity and hence promoted the delayed demixing process during the membrane formation. Experimental results also revealed that the microwave post treatment produced membranes with better separation performance (approximately 10% higher) with smaller pore diameters in comparison to those post-treated with hypochlorite.
format	Thesis
qualification_level	Master's degree
author	Lee, Sze Yean
author_facet	Lee, Sze Yean
author_sort	Lee, Sze Yean
title	Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
title_short	Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
title_full	Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
title_fullStr	Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
title_full_unstemmed	Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
title_sort	effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering
granting_department	Faculty of Chemical and Natural Resources Engineering
publishDate	2008
url	http://eprints.utm.my/id/eprint/9688/1/LeeSzeYeanMFKKKSA2008.pdf
_version_	1747814777655132160

Effect of bore fluid and post treatment on polyethersulfone ultrafiltration hollow fiber membrane

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