Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery

This study was initiated to develop of a green technology in ammonia recovery by using ceramic membrane derived from natural ceramic material in membrane contactor (MC) system. The main objective of this study is to develop a high performance and superhydrophobic dual-layer ceramic hollow fibre memb...

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Main Author:	Pauzan, Mohammad Arif Budiman
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/102870/1/MohammadArifBudimanPSChe2022.pdf
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spelling	my-utm-ep.1028702023-09-26T06:06:30Z Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery 2022 Pauzan, Mohammad Arif Budiman TP Chemical technology This study was initiated to develop of a green technology in ammonia recovery by using ceramic membrane derived from natural ceramic material in membrane contactor (MC) system. The main objective of this study is to develop a high performance and superhydrophobic dual-layer ceramic hollow fibre membranes for effective ammonia recovery from alternative natural material, Malaysian kaolin. However, due to high content of silica in kaolin which dissolves in high concentration of ammonia has hindered it to be used in MC system which requires high concentration of ammonia to work efficiently. Hence, a range of zirconia was added in this work to tackle the problem. Plus, the fabrication of dual layer configuration to the membrane by creating a protecting layer to the mixed zirconia-kaolin membrane enhanced the performance of the membrane in high concentration of ammonia. The dual-layer mixed zirconia-kaolin hollow fibre membrane (DLZK) was fabricated by using single step co-extrusion phase inversion/co-sintering technique where the mixed zirconia-kaolin was on the inner layer while zirconia was only on the outer layer. Upon investigation on the effect of different co-sintering temperatures, DLZK co-sintered at 1300°C showed the best characteristics in term of high mechanical strength (116 MPa) and possessed low dissolution rate in high alkaline solution. Finally, prior to be used in MC application system, the surface of the membranes was modified to be hydrophobic by grafting with fluoroalkylsilane agent. Then, the membranes were subjected to MC operating system for ammonia recovery using two different concentrations of synthetic ammonia (NH4OH), contacted with sulphuric acid and compared in term of properties between the membranes. DLZK was discovered to yield the highest mass transfer coefficient which was 3.77 x 10-5 Kms-1 at 10M (pH 11-13) of NH4OH and was able to recover almost 80%. Then, the DLZK membrane was subjected to recover ammonia in the treated palm oil mill effluent. The membrane showed similar performance using synthetic wastewater of NH4OH as almost 80% of ammonia was successfully recovered with mass transfer coefficient of 3.50 x 10-5 Kms-1. This indicates that the fabricated DLZK membrane can be applied in MC system for ammonia recovery as an alternative naturally based membrane which possesses superhydrophobic properties and is able to withstand high alkaline condition. The ammonia recovered was in the form of ammonium sulphate, ((NH4)2SO4) salt, which can be used as alternative fertilizer. 2022 Thesis http://eprints.utm.my/102870/ http://eprints.utm.my/102870/1/MohammadArifBudimanPSChe2022.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:150696 phd doctoral 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 Pauzan, Mohammad Arif Budiman Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
description	This study was initiated to develop of a green technology in ammonia recovery by using ceramic membrane derived from natural ceramic material in membrane contactor (MC) system. The main objective of this study is to develop a high performance and superhydrophobic dual-layer ceramic hollow fibre membranes for effective ammonia recovery from alternative natural material, Malaysian kaolin. However, due to high content of silica in kaolin which dissolves in high concentration of ammonia has hindered it to be used in MC system which requires high concentration of ammonia to work efficiently. Hence, a range of zirconia was added in this work to tackle the problem. Plus, the fabrication of dual layer configuration to the membrane by creating a protecting layer to the mixed zirconia-kaolin membrane enhanced the performance of the membrane in high concentration of ammonia. The dual-layer mixed zirconia-kaolin hollow fibre membrane (DLZK) was fabricated by using single step co-extrusion phase inversion/co-sintering technique where the mixed zirconia-kaolin was on the inner layer while zirconia was only on the outer layer. Upon investigation on the effect of different co-sintering temperatures, DLZK co-sintered at 1300°C showed the best characteristics in term of high mechanical strength (116 MPa) and possessed low dissolution rate in high alkaline solution. Finally, prior to be used in MC application system, the surface of the membranes was modified to be hydrophobic by grafting with fluoroalkylsilane agent. Then, the membranes were subjected to MC operating system for ammonia recovery using two different concentrations of synthetic ammonia (NH4OH), contacted with sulphuric acid and compared in term of properties between the membranes. DLZK was discovered to yield the highest mass transfer coefficient which was 3.77 x 10-5 Kms-1 at 10M (pH 11-13) of NH4OH and was able to recover almost 80%. Then, the DLZK membrane was subjected to recover ammonia in the treated palm oil mill effluent. The membrane showed similar performance using synthetic wastewater of NH4OH as almost 80% of ammonia was successfully recovered with mass transfer coefficient of 3.50 x 10-5 Kms-1. This indicates that the fabricated DLZK membrane can be applied in MC system for ammonia recovery as an alternative naturally based membrane which possesses superhydrophobic properties and is able to withstand high alkaline condition. The ammonia recovered was in the form of ammonium sulphate, ((NH4)2SO4) salt, which can be used as alternative fertilizer.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Pauzan, Mohammad Arif Budiman
author_facet	Pauzan, Mohammad Arif Budiman
author_sort	Pauzan, Mohammad Arif Budiman
title	Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
title_short	Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
title_full	Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
title_fullStr	Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
title_full_unstemmed	Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
title_sort	dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2022
url	http://eprints.utm.my/102870/1/MohammadArifBudimanPSChe2022.pdf
_version_	1783729228507774976

Dual-layer zirconia-kaolin hollow fibre in membrane contactor for ammonia recovery

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