Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads

Copper (II) contaminated water threatens not only the aquatic lives but also human health due to the ability to accumulate in the food chains. Therefore, effective and economical technique must be developed to solve this issue. Although nanoparticles had been found effective in the removal of heavy...

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Main Author:	Wong, Ee Ting
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/54063/25/WongEeTingMFKChE2015.pdf
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id	my-utm-ep.54063
record_format	uketd_dc
spelling	my-utm-ep.540632020-10-15T03:42:11Z Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads 2015-02 Wong, Ee Ting TP Chemical technology Copper (II) contaminated water threatens not only the aquatic lives but also human health due to the ability to accumulate in the food chains. Therefore, effective and economical technique must be developed to solve this issue. Although nanoparticles had been found effective in the removal of heavy metal and dye, theirs instability in aqueous solution had limited theirs practical usage. Therefore, in this research, the magnetic nanoparticles of cobalt-doped maghemite (Co-Fe2O3) which were synthesized by coprecipitation method using stable ferric and cobalt salts were immobilized in polyvinyl alcohol (PVA)-alginate matrix (in bead form) for the removal of copper (II). X-ray photoelectron spectroscopy (XPS) was then used to identify the copper (II) removal mechanism under photo condition. The effects of various parameters such as pH, catalyst dosage, light intensity and presence of negative organic compounds were investigated. After 180 min of sunlight irradiation exposure, copper (II) concentration was reduced to 1.080 ppm and 0.625 ppm at pH 4 and 6, respectively. This concentration complied with the World Health Organization (WHO) drinking water standard (less than 2.0 ppm). The optimum pH and catalyst dosage investigated were found to be pH 6 and 8% (v/v), respectively. In addition, organic additives like acetate and ethanol were found to enhance the copper (II) removal. The adsorption-desorption test further proved that Co-Fe2O3-PVA alginate bead has good recyclability with a drop of only 2.7% copper (II) removal efficiency after five cycles. Therefore, this bead is an attractive and ecofriendly separation tool to be applied in domestic water purification system under the sustainable light illumination. 2015-02 Thesis http://eprints.utm.my/id/eprint/54063/ http://eprints.utm.my/id/eprint/54063/25/WongEeTingMFKChE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86183 masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Wong, Ee Ting Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
description	Copper (II) contaminated water threatens not only the aquatic lives but also human health due to the ability to accumulate in the food chains. Therefore, effective and economical technique must be developed to solve this issue. Although nanoparticles had been found effective in the removal of heavy metal and dye, theirs instability in aqueous solution had limited theirs practical usage. Therefore, in this research, the magnetic nanoparticles of cobalt-doped maghemite (Co-Fe2O3) which were synthesized by coprecipitation method using stable ferric and cobalt salts were immobilized in polyvinyl alcohol (PVA)-alginate matrix (in bead form) for the removal of copper (II). X-ray photoelectron spectroscopy (XPS) was then used to identify the copper (II) removal mechanism under photo condition. The effects of various parameters such as pH, catalyst dosage, light intensity and presence of negative organic compounds were investigated. After 180 min of sunlight irradiation exposure, copper (II) concentration was reduced to 1.080 ppm and 0.625 ppm at pH 4 and 6, respectively. This concentration complied with the World Health Organization (WHO) drinking water standard (less than 2.0 ppm). The optimum pH and catalyst dosage investigated were found to be pH 6 and 8% (v/v), respectively. In addition, organic additives like acetate and ethanol were found to enhance the copper (II) removal. The adsorption-desorption test further proved that Co-Fe2O3-PVA alginate bead has good recyclability with a drop of only 2.7% copper (II) removal efficiency after five cycles. Therefore, this bead is an attractive and ecofriendly separation tool to be applied in domestic water purification system under the sustainable light illumination.
format	Thesis
qualification_level	Master's degree
author	Wong, Ee Ting
author_facet	Wong, Ee Ting
author_sort	Wong, Ee Ting
title	Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
title_short	Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
title_full	Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
title_fullStr	Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
title_full_unstemmed	Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
title_sort	copper (ii) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/54063/25/WongEeTingMFKChE2015.pdf
_version_	1747817676734988288

Copper (II) removal from aqueous solution using cobalt-doped iron oxide polyvinyl alcohol-alginate beads

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