Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal

The importance of the substrate layer in composite membranes lies not only in providing mechanical strength to the active layer, but also in serving as a foundation for the formation of polyamide. Therefore, the objectives of this study were to investigate the physicochemical properties of water sta...

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Main Author:	Tajuddin, Muhammad Hariz Aizat
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/102992/1/MuhammadHarizAizatTajuddinMChe2022.pdf.pdf
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spelling	my-utm-ep.1029922023-10-12T08:40:19Z Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal 2022 Tajuddin, Muhammad Hariz Aizat TP Chemical technology The importance of the substrate layer in composite membranes lies not only in providing mechanical strength to the active layer, but also in serving as a foundation for the formation of polyamide. Therefore, the objectives of this study were to investigate the physicochemical properties of water stable metal organic framework University of Oslo-66 (UiO-66) nanoparticle and thin film composite (TFC) mixed matrix membrane (TFC-MMM). The membranes were fabricated by a phase inversion process that consists of UiO-66 nanoparticles embedded in a polysulfone matrix ranging from 0, 0.05, 0.1, 0.3 and 0.5 wt%. Then, an interfacial polymerization process has taken place to form polyamide on the outer membrane surface. These nanoparticles and membranes were characterized with field emission scanning electron microscopy, x-ray diffraction, contact angle, overall porosity, atomic absorption spectroscopy, attenuated total reflectance Fourier transform infrared, atomic force microscopy, pore size distribution and zeta potential. Based on the characterizations, the membranes have the potential to be used for arsenic (V) rejection in water flux tests. The forward osmosis process was utilized to determine water flux and solute reverse flux. Pure water and 1 M NaCl solution were used as feed and draw solution, respectively. The water flux was increased up to 20 LMH at TFC-0.3 and it went down to 17 LMH at TFC-0.5 while the solute reverse flux kept elevated but at a controlled rate. Then, 100 ppm arsenic (V) was used as feed for As rejection performance. It was demonstrated that the physicochemical properties of MMM affect the interfacial polymerization of polyamide, leading to greater arsenic (V) rejection which up to 96%. Then, the pH of the feed solution was adjusted to 5, 6, 7, 8 and 9. The membrane performs optimally at a pH of 9 due to electrostatic repulsion between HAsO42- and polyamide. 2022 Thesis http://eprints.utm.my/102992/ http://eprints.utm.my/102992/1/MuhammadHarizAizatTajuddinMChe2022.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150715 masters Universiti Teknologi Malaysia 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 Tajuddin, Muhammad Hariz Aizat Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
description	The importance of the substrate layer in composite membranes lies not only in providing mechanical strength to the active layer, but also in serving as a foundation for the formation of polyamide. Therefore, the objectives of this study were to investigate the physicochemical properties of water stable metal organic framework University of Oslo-66 (UiO-66) nanoparticle and thin film composite (TFC) mixed matrix membrane (TFC-MMM). The membranes were fabricated by a phase inversion process that consists of UiO-66 nanoparticles embedded in a polysulfone matrix ranging from 0, 0.05, 0.1, 0.3 and 0.5 wt%. Then, an interfacial polymerization process has taken place to form polyamide on the outer membrane surface. These nanoparticles and membranes were characterized with field emission scanning electron microscopy, x-ray diffraction, contact angle, overall porosity, atomic absorption spectroscopy, attenuated total reflectance Fourier transform infrared, atomic force microscopy, pore size distribution and zeta potential. Based on the characterizations, the membranes have the potential to be used for arsenic (V) rejection in water flux tests. The forward osmosis process was utilized to determine water flux and solute reverse flux. Pure water and 1 M NaCl solution were used as feed and draw solution, respectively. The water flux was increased up to 20 LMH at TFC-0.3 and it went down to 17 LMH at TFC-0.5 while the solute reverse flux kept elevated but at a controlled rate. Then, 100 ppm arsenic (V) was used as feed for As rejection performance. It was demonstrated that the physicochemical properties of MMM affect the interfacial polymerization of polyamide, leading to greater arsenic (V) rejection which up to 96%. Then, the pH of the feed solution was adjusted to 5, 6, 7, 8 and 9. The membrane performs optimally at a pH of 9 due to electrostatic repulsion between HAsO42- and polyamide.
format	Thesis
qualification_level	Master's degree
author	Tajuddin, Muhammad Hariz Aizat
author_facet	Tajuddin, Muhammad Hariz Aizat
author_sort	Tajuddin, Muhammad Hariz Aizat
title	Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
title_short	Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
title_full	Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
title_fullStr	Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
title_full_unstemmed	Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal
title_sort	forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (v) removal
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2022
url	http://eprints.utm.my/102992/1/MuhammadHarizAizatTajuddinMChe2022.pdf.pdf
_version_	1783729233323884544

Forward osmosis thin film composite membrane incorporated with metal organic framework for arsenic (V) removal

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