Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis

Osmotic power generation through pressure retarded osmosis (PRO) has been recognized as an alternative source of energy. Membrane is one of the major elements to guarantee the successful application of PRO for power generation. However, the major current limitation in PRO lies in the design of a hig...

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Main Author:	Sharudin, Syafiq Izzany
Format:	Thesis
Language:	English
Published:	2020
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/92082/1/SyafiqIzzanySharudinMSChE2020.pdf
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spelling	my-utm-ep.920822021-08-30T05:10:01Z Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis 2020 Sharudin, Syafiq Izzany TP Chemical technology Osmotic power generation through pressure retarded osmosis (PRO) has been recognized as an alternative source of energy. Membrane is one of the major elements to guarantee the successful application of PRO for power generation. However, the major current limitation in PRO lies in the design of a high-performance membrane which is endowed with desired properties in terms of flux and anti-fouling properties. Hence, the main objective of this study was to fabricate a hydrophilic and high flux PRO thin film nanocomposite (TFN) membrane with high flux and anti-fouling properties through the incorporation of zwitterionic polymers, poly (3- methacryloylethoxy carbonyl pyridinium sulfopropyl betaine) (PMAPS) in the substrate and titanium dioxide nanotube (TNT) into the polyamide (PA) layer. Different loadings of PMAPS were physically mixed with polysulfone (PSF) dope prior to the formation of the TFC substrate. Further optimization via etching treatment was performed to increase substrate porosity and the PA selective layer incorporated with TNT was formed on top of the substrate through interfacial polymerization technique. Membrane characterizations were carried out using scanning electron microscope, transmission electron microscopy, Fourier-transform infrared spectroscopy, x-ray diffractometer, energy dispersive x-ray, and contact angle goniometer. The water flux and power density performance of the zwitterion incorporated TFN membranes were evaluated using a custom-made PRO system. The power density exhibited by etched TFN membrane incorporated with 2.0% PMAPS (PSF/PMAPS-2.0 Etched TFN) was 2.12 W/m2 at 5 bar while unetched TFN membrane exhibited power density of 0.96 W/m2 at 7 bar. Addition of TNT resulted in the highest power density of 2.22 W/m2 at 5 bar. In terms of anti-fouling properties, PSF/PMAPS-2.0 Etched TFN achieved higher normalized water flux with 97% flux recovery compared to control substrate with 90% flux recovery. In conclusion, membrane modification using PMAPS zwitterions and TNT nanoparticles improved water flux, anti-fouling properties and power density. 2020 Thesis http://eprints.utm.my/id/eprint/92082/ http://eprints.utm.my/id/eprint/92082/1/SyafiqIzzanySharudinMSChE2020.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:139328 masters Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Sharudin, Syafiq Izzany Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
description	Osmotic power generation through pressure retarded osmosis (PRO) has been recognized as an alternative source of energy. Membrane is one of the major elements to guarantee the successful application of PRO for power generation. However, the major current limitation in PRO lies in the design of a high-performance membrane which is endowed with desired properties in terms of flux and anti-fouling properties. Hence, the main objective of this study was to fabricate a hydrophilic and high flux PRO thin film nanocomposite (TFN) membrane with high flux and anti-fouling properties through the incorporation of zwitterionic polymers, poly (3- methacryloylethoxy carbonyl pyridinium sulfopropyl betaine) (PMAPS) in the substrate and titanium dioxide nanotube (TNT) into the polyamide (PA) layer. Different loadings of PMAPS were physically mixed with polysulfone (PSF) dope prior to the formation of the TFC substrate. Further optimization via etching treatment was performed to increase substrate porosity and the PA selective layer incorporated with TNT was formed on top of the substrate through interfacial polymerization technique. Membrane characterizations were carried out using scanning electron microscope, transmission electron microscopy, Fourier-transform infrared spectroscopy, x-ray diffractometer, energy dispersive x-ray, and contact angle goniometer. The water flux and power density performance of the zwitterion incorporated TFN membranes were evaluated using a custom-made PRO system. The power density exhibited by etched TFN membrane incorporated with 2.0% PMAPS (PSF/PMAPS-2.0 Etched TFN) was 2.12 W/m2 at 5 bar while unetched TFN membrane exhibited power density of 0.96 W/m2 at 7 bar. Addition of TNT resulted in the highest power density of 2.22 W/m2 at 5 bar. In terms of anti-fouling properties, PSF/PMAPS-2.0 Etched TFN achieved higher normalized water flux with 97% flux recovery compared to control substrate with 90% flux recovery. In conclusion, membrane modification using PMAPS zwitterions and TNT nanoparticles improved water flux, anti-fouling properties and power density.
format	Thesis
qualification_level	Master's degree
author	Sharudin, Syafiq Izzany
author_facet	Sharudin, Syafiq Izzany
author_sort	Sharudin, Syafiq Izzany
title	Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
title_short	Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
title_full	Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
title_fullStr	Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
title_full_unstemmed	Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
title_sort	performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2020
url	http://eprints.utm.my/id/eprint/92082/1/SyafiqIzzanySharudinMSChE2020.pdf
_version_	1747818565202870272

Performance of thin film nanocomposite membranes incorporated with zwitterion and titania nanotube for pressure retarded osmosis

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