Preparation and characterization of titanium dioxide (TiO<inf>2</inf>) from sludge produced by TiCl<inf>4</inf> flocculation with FeCl<inf>3</inf>, A1 <inf>2</inf>(SO<inf>4</inf>)3 and Ca(OH)<inf>2</inf> coagulant aids in wastewater

Shon, HK; Vigneswaran, S; Kandasamy, J; Zareie, MH; Kim, JB; Cho, DL; Kim, JH

Preparation and characterization of titanium dioxide (TiO<inf>2</inf>) from sludge produced by TiCl<inf>4</inf> flocculation with FeCl<inf>3</inf>, A1 <inf>2</inf>(SO<inf>4</inf>)3 and Ca(OH)<inf>2</inf> coagulant aids in wastewater

Shon, HK

Vigneswaran, S

Kandasamy, J Zareie, MH Kim, JB Cho, DL Kim, JH

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Publication Type:: Journal Article
Citation:: Separation Science and Technology, 2009, 44 (7), pp. 1525 - 1543
Issue Date:: 2009-05-01

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Field	Value	Language
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Kandasamy, J	en_US
dc.contributor.author	Zareie, MH	en_US
dc.contributor.author	Kim, JB	en_US
dc.contributor.author	Cho, DL	en_US
dc.contributor.author	Kim, JH	en_US
dc.date.issued	2009-05-01	en_US
dc.identifier.citation	Separation Science and Technology, 2009, 44 (7), pp. 1525 - 1543	en_US
dc.identifier.issn	0149-6395	en_US
dc.identifier.uri	http://hdl.handle.net/10453/8471
dc.description.abstract	In this study, TiCl4 coagulant together with coagulant aids such as FeCl3, A12(S04)3, and Ca(OH)2 were investigated to improve the photoactivity of titanium dioxide (TiO2) produced from sludge and to increase the resulting low pH value. After TiCl4 flocculation with three coagulant aids, the settled floe (sludge) was incinerated at 600°C to produce TiO2 doped with Fe, Al, and Ca elements. Fe-, Al-, and Ca-doped TiO2 was characterized in terms of structural, chemical, and photo-electronic properties. All the coagulant aids used together with Ti-salt flocculation effectively increased the pH values. The surface area of TiO2-WO (without any coagulant aids), Fe/Ti02, Al/Ti02, and Ca/Ti02 was 122 m2/g, 77 m2/g, 136 m2/g and 116 m 2/g, respectively. The TiO2-WO, Fe/Ti02) Al/Ti02, and Ca/Ti02 was found to be of anatase phase. The XRD pattern on the Fe/Ti02 included an additional peak of hematite (α-Fe2O3). The majority of gaseous acetaldehyde with TiO2-WO and Ca/Ti02 for photocatalytic activity was completely removed within 40 minutes under UV irradiation.	en_US
dc.relation.ispartof	Separation Science and Technology	en_US
dc.relation.isbasedon	10.1080/01496390902775810	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Preparation and characterization of titanium dioxide (TiO<inf>2</inf>) from sludge produced by TiCl<inf>4</inf> flocculation with FeCl<inf>3</inf>, A1 <inf>2</inf>(SO<inf>4</inf>)3 and Ca(OH)<inf>2</inf> coagulant aids in wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	7	en_US
utslib.citation.volume	44	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access
pubs.issue	7	en_US
pubs.publication-status	Published	en_US
pubs.volume	44	en_US

Abstract:

In this study, TiCl4 coagulant together with coagulant aids such as FeCl3, A12(S04)3, and Ca(OH)2 were investigated to improve the photoactivity of titanium dioxide (TiO2) produced from sludge and to increase the resulting low pH value. After TiCl4 flocculation with three coagulant aids, the settled floe (sludge) was incinerated at 600°C to produce TiO2 doped with Fe, Al, and Ca elements. Fe-, Al-, and Ca-doped TiO2 was characterized in terms of structural, chemical, and photo-electronic properties. All the coagulant aids used together with Ti-salt flocculation effectively increased the pH values. The surface area of TiO2-WO (without any coagulant aids), Fe/Ti02, Al/Ti02, and Ca/Ti02 was 122 m2/g, 77 m2/g, 136 m2/g and 116 m 2/g, respectively. The TiO2-WO, Fe/Ti02) Al/Ti02, and Ca/Ti02 was found to be of anatase phase. The XRD pattern on the Fe/Ti02 included an additional peak of hematite (α-Fe2O3). The majority of gaseous acetaldehyde with TiO2-WO and Ca/Ti02 for photocatalytic activity was completely removed within 40 minutes under UV irradiation.

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