Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment

Alumina hollow fibre exhibits an uncontrollable pore sieving which promotes intermediate pore blocking and fouling phenomenon during the operation, thus limits the membrane separation efficiencies. Therefore, to enhance filtration and selective properties of the membrane, mesoporous alumina was depo...

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Main Author:	Nor Azmi, Nur Farhah Adlina
Format:	Thesis
Language:	English
Published:	2019
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/86211/1/NurFarhahAdlinaMSChE2019.pdf
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spelling	my-utm-ep.862112020-08-30T09:07:53Z Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment 2019 Nor Azmi, Nur Farhah Adlina TP Chemical technology Alumina hollow fibre exhibits an uncontrollable pore sieving which promotes intermediate pore blocking and fouling phenomenon during the operation, thus limits the membrane separation efficiencies. Therefore, to enhance filtration and selective properties of the membrane, mesoporous alumina was deposited on the outer surface of alumina hollow fibre using hydrothermal synthesis method in order to obtain a good crystalline membrane structure, highly uniform channel and narrow pore size distribution of membrane. The effect of different concentrations of mesoporous alumina suspension, synthesis times and calcination temperatures on the properties and separation performances of the prepared membranes were investigated. From the hydrothermal process, it was found that the optimum mesoporous alumina membrane was obtained at 1.2 M suspension concentration for 48 h reaction time, giving highest surface area of 236.495 m2/g and 9.8 µm thickness of mesoporous alumina on top layer alumina hollow fibre. It can be said that the highest reactants concentration would increase the rate of mesoporous alumina membranes formation. In addition, mesoporous alumina membranes were further analyzed using different pollutants (PEG and BSA) by varying calcination temperature within range of 550–900 ºC for its selectivity performance. The highest PEG and BSA filtration were observed by mesoporous alumina membrane calcined at 800 ºC, with the percentage of rejection at 85.7 % and 53 %, respectively. This result leads for selecting the membrane for oily emulsion filtration at 1000 ppm. Since the membranes pose low flux at 14.28 L/h.m2 with 52 % rejection on oily emulsion, modification on the membrane was carried out by incorporating the membranes with photocatalytic activity, at 3 wt. % of CuO/CeO2 photocatalyst using sol gel Pechini. The highest oil flux and rejection at 1422 L/h.m2 and 92 %, respectively, with the application of UV assisted online cleaning method. The results indicate that photocatalytic degradation of oil by CuO/CeO2 photocatalyst improved the membrane separation performance. This study provides an insight on the improved performances of fabricated mesoporous alumina membrane incorporated CuO/CeO2 photocatalyst on oily wastewater treatment which can be applied at industrial applications. 2019 Thesis http://eprints.utm.my/id/eprint/86211/ http://eprints.utm.my/id/eprint/86211/1/NurFarhahAdlinaMSChE2019.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:132001 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 Nor Azmi, Nur Farhah Adlina Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
description	Alumina hollow fibre exhibits an uncontrollable pore sieving which promotes intermediate pore blocking and fouling phenomenon during the operation, thus limits the membrane separation efficiencies. Therefore, to enhance filtration and selective properties of the membrane, mesoporous alumina was deposited on the outer surface of alumina hollow fibre using hydrothermal synthesis method in order to obtain a good crystalline membrane structure, highly uniform channel and narrow pore size distribution of membrane. The effect of different concentrations of mesoporous alumina suspension, synthesis times and calcination temperatures on the properties and separation performances of the prepared membranes were investigated. From the hydrothermal process, it was found that the optimum mesoporous alumina membrane was obtained at 1.2 M suspension concentration for 48 h reaction time, giving highest surface area of 236.495 m2/g and 9.8 µm thickness of mesoporous alumina on top layer alumina hollow fibre. It can be said that the highest reactants concentration would increase the rate of mesoporous alumina membranes formation. In addition, mesoporous alumina membranes were further analyzed using different pollutants (PEG and BSA) by varying calcination temperature within range of 550–900 ºC for its selectivity performance. The highest PEG and BSA filtration were observed by mesoporous alumina membrane calcined at 800 ºC, with the percentage of rejection at 85.7 % and 53 %, respectively. This result leads for selecting the membrane for oily emulsion filtration at 1000 ppm. Since the membranes pose low flux at 14.28 L/h.m2 with 52 % rejection on oily emulsion, modification on the membrane was carried out by incorporating the membranes with photocatalytic activity, at 3 wt. % of CuO/CeO2 photocatalyst using sol gel Pechini. The highest oil flux and rejection at 1422 L/h.m2 and 92 %, respectively, with the application of UV assisted online cleaning method. The results indicate that photocatalytic degradation of oil by CuO/CeO2 photocatalyst improved the membrane separation performance. This study provides an insight on the improved performances of fabricated mesoporous alumina membrane incorporated CuO/CeO2 photocatalyst on oily wastewater treatment which can be applied at industrial applications.
format	Thesis
qualification_level	Master's degree
author	Nor Azmi, Nur Farhah Adlina
author_facet	Nor Azmi, Nur Farhah Adlina
author_sort	Nor Azmi, Nur Farhah Adlina
title	Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
title_short	Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
title_full	Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
title_fullStr	Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
title_full_unstemmed	Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment
title_sort	mesoporous alumina membrane incorporated cuo/ceo2 catalyst for oily wastewater treatment
granting_institution	Universiti Teknologi Malaysia, Faculty of Engineering - School of Chemical & Energy Engineering
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2019
url	http://eprints.utm.my/id/eprint/86211/1/NurFarhahAdlinaMSChE2019.pdf
_version_	1747818505590276096

Mesoporous alumina membrane incorporated CuO/CeO2 catalyst for oily wastewater treatment

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