Preparation and characterisation of titanium dioxide (TiO<inf>2</inf>) and thiourea-doped titanate nanotubes prepared from wastewater flocculated sludge

Okour, Y; Shon, HK; El Saliby, IJ; Naidu, R; Kim, JB; Kim, JH

Preparation and characterisation of titanium dioxide (TiO<inf>2</inf>) and thiourea-doped titanate nanotubes prepared from wastewater flocculated sludge

Okour, Y Shon, HK

El Saliby, IJ

Naidu, R Kim, JB Kim, JH

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2010, 101 (5), pp. 1453 - 1458
Issue Date:: 2010-01-01

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Field	Value	Language
dc.contributor.author	Okour, Y	en_US
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	El Saliby, IJ https://orcid.org/0000-0003-4119-3198	en_US
dc.contributor.author	Naidu, R	en_US
dc.contributor.author	Kim, JB	en_US
dc.contributor.author	Kim, JH	en_US
dc.date.available	2009-06-26	en_US
dc.date.issued	2010-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2010, 101 (5), pp. 1453 - 1458	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/13635
dc.description.abstract	In this study, titanium (Ti), ferric (Fe) and aluminum (Al) salt flocculants were compared for their efficiency in treating wastewater collected from Sydney Olympic Park wastewater treatment plant by following the jar test procedure. Produced sludge from Ti-salt flocculation was dried and titanium dioxide (TiO2) nanoparticles were generated after the incineration of sludge produced from the Ti-salt flocculation of wastewater. Later on, titanate nanotubes were synthesized after TiO2 nanoparticles were hydrothermally treated with 10 N NaOH solution at 130oC for 24 h. Titanate nanotubes were either acid or deionised water-washed, while thiourea-doping was employed to produce visible light-responsive nanotubes. Wastewater flocculation using Ti-salt was found to be as efficient as Fe and Al flocculation in terms of turbidity and DOC removal. XRD results showed that the anatase structure was predominant for TiO2 nanoparticles, while thiourea-doped titanate nanotubes only indicated anatase structure with an increased crystallinity after being crystallized at 600oC. The photocatalytic activity of all photocatalysts was evaluated using the photooxidation of acetaldehyde. Thiourea-doped nanotubes showed a greater photocatalytic activity than as-prepared TiO2 nanoparticles, deionised water-washed, acid-washed titanate nanotubes and P25 under UV and visible light irradiation. © 2009.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2009.06.096	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Oxygen	en_US
dc.subject.mesh	Titanium	en_US
dc.subject.mesh	Acetaldehyde	en_US
dc.subject.mesh	Thiourea	en_US
dc.subject.mesh	Crystallization	en_US
dc.subject.mesh	X-Ray Diffraction	en_US
dc.subject.mesh	Nephelometry and Turbidimetry	en_US
dc.subject.mesh	Ultraviolet Rays	en_US
dc.subject.mesh	Sewage	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Kinetics	en_US
dc.subject.mesh	Catalysis	en_US
dc.subject.mesh	Flocculation	en_US
dc.subject.mesh	Surface Properties	en_US
dc.subject.mesh	Nanotubes	en_US
dc.title	Preparation and characterisation of titanium dioxide (TiO<inf>2</inf>) and thiourea-doped titanate nanotubes prepared from wastewater flocculated sludge	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	101	en_US
utslib.for	090409 Wastewater Treatment Processes	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	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	101	en_US

Abstract:

In this study, titanium (Ti), ferric (Fe) and aluminum (Al) salt flocculants were compared for their efficiency in treating wastewater collected from Sydney Olympic Park wastewater treatment plant by following the jar test procedure. Produced sludge from Ti-salt flocculation was dried and titanium dioxide (TiO2) nanoparticles were generated after the incineration of sludge produced from the Ti-salt flocculation of wastewater. Later on, titanate nanotubes were synthesized after TiO2 nanoparticles were hydrothermally treated with 10 N NaOH solution at 130oC for 24 h. Titanate nanotubes were either acid or deionised water-washed, while thiourea-doping was employed to produce visible light-responsive nanotubes. Wastewater flocculation using Ti-salt was found to be as efficient as Fe and Al flocculation in terms of turbidity and DOC removal. XRD results showed that the anatase structure was predominant for TiO2 nanoparticles, while thiourea-doped titanate nanotubes only indicated anatase structure with an increased crystallinity after being crystallized at 600oC. The photocatalytic activity of all photocatalysts was evaluated using the photooxidation of acetaldehyde. Thiourea-doped nanotubes showed a greater photocatalytic activity than as-prepared TiO2 nanoparticles, deionised water-washed, acid-washed titanate nanotubes and P25 under UV and visible light irradiation. © 2009.

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http://hdl.handle.net/10453/13635