Preparation and characterization of titania nanoparticles from titanium tetrachloride and titanium sulfate flocculation of dye wastewater

Kim, JB; Seol, DH; Shon, HK; Kim, GJ; Kim, JH

Preparation and characterization of titania nanoparticles from titanium tetrachloride and titanium sulfate flocculation of dye wastewater

Kim, JB Seol, DH Shon, HK

Kim, GJ Kim, JH

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Publication Type:: Journal Article
Citation:: Journal of the Japan Petroleum Institute, 2010, 53 (3), pp. 167 - 172
Issue Date:: 2010-10-22

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Field	Value	Language
dc.contributor.author	Kim, JB	en_US
dc.contributor.author	Seol, DH	en_US
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	Kim, GJ	en_US
dc.contributor.author	Kim, JH	en_US
dc.date.issued	2010-10-22	en_US
dc.identifier.citation	Journal of the Japan Petroleum Institute, 2010, 53 (3), pp. 167 - 172	en_US
dc.identifier.issn	1346-8804	en_US
dc.identifier.uri	http://hdl.handle.net/10453/15306
dc.description.abstract	Titanium dioxide (TiO2) is the most widely used metal oxide for environmental applications, cosmetics, paints, electronic paper and solar cells, so demand is increasing rapidly. TiO2 can be produced from Ti-flocculated sludge, which is superior to the commercially available TiO 2 in terms of photocatalytic activity and surface area. This process also reduces the amount of sludge for disposal after waste water treatment. In this study, flocculation of dye wastewater using TiCl4 and Ti(SO 4)2 coagulants was investigated to prepare TiO2 nanoparticles from Ti-salt flocculated sludge. Both coagulants showed high flocculation performance in removing organic matter (77%), total nitrogen (76%) and total phosphorus (95%) from dye wastewater. Therefore, Ti-salt coagulants can be used in dye wastewater treatment. Incineration of the Ti-salt flocculated sludge at 600°C was performed to produce TiO2 nanoparticles. Detailed characteristics of the TiO2 nanoparticles were investigated in terms of X-ray diffraction, surface area, functional group, microscopy and photocatalytic activity. The TiO2 produced from TiCl4 and Ti(SO4)2 flocculated sludge (DCT and DST, respectively) had only the anatase structure with 20 nm particle size. The specific area of DCT and DST was 71 and 69 m2/g, respectively. Both DCT and DST were doped with carbon, silicon and sodium. Both exhibited high photocatalytic activity with complete degradation of acetaldehyde within 80 min under UV irradiation. These findings imply that TiO2 nanoparticles produced from wastewater sludge have significant potential for applications such as photocatalyst bricks, ceramic filters for air/water purification, and selective catalytic reduction catalysts.	en_US
dc.relation.ispartof	Journal of the Japan Petroleum Institute	en_US
dc.relation.isbasedon	10.1627/jpi.53.167	en_US
dc.subject.classification	Physical Chemistry	en_US
dc.title	Preparation and characterization of titania nanoparticles from titanium tetrachloride and titanium sulfate flocculation of dye wastewater	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	53	en_US
utslib.for	090409 Wastewater Treatment Processes	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
utslib.for	0904 Chemical 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/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	53	en_US

Abstract:

Titanium dioxide (TiO2) is the most widely used metal oxide for environmental applications, cosmetics, paints, electronic paper and solar cells, so demand is increasing rapidly. TiO2 can be produced from Ti-flocculated sludge, which is superior to the commercially available TiO 2 in terms of photocatalytic activity and surface area. This process also reduces the amount of sludge for disposal after waste water treatment. In this study, flocculation of dye wastewater using TiCl4 and Ti(SO 4)2 coagulants was investigated to prepare TiO2 nanoparticles from Ti-salt flocculated sludge. Both coagulants showed high flocculation performance in removing organic matter (77%), total nitrogen (76%) and total phosphorus (95%) from dye wastewater. Therefore, Ti-salt coagulants can be used in dye wastewater treatment. Incineration of the Ti-salt flocculated sludge at 600°C was performed to produce TiO2 nanoparticles. Detailed characteristics of the TiO2 nanoparticles were investigated in terms of X-ray diffraction, surface area, functional group, microscopy and photocatalytic activity. The TiO2 produced from TiCl4 and Ti(SO4)2 flocculated sludge (DCT and DST, respectively) had only the anatase structure with 20 nm particle size. The specific area of DCT and DST was 71 and 69 m2/g, respectively. Both DCT and DST were doped with carbon, silicon and sodium. Both exhibited high photocatalytic activity with complete degradation of acetaldehyde within 80 min under UV irradiation. These findings imply that TiO2 nanoparticles produced from wastewater sludge have significant potential for applications such as photocatalyst bricks, ceramic filters for air/water purification, and selective catalytic reduction catalysts.

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http://hdl.handle.net/10453/15306