title: Seasonal variation in the properties of titania photocatalysts produced from Ti-salt flocculated bioresource sludge.
abstract: Ti-salt flocculation of biologically treated sewage effluent (BTSE) was carried out on monthly basis during one year to trace the seasonal variation in the properties of BTSE, Ti-salt flocculated BTSE and titania photocatalysts. Titania photocatalysts were produced from incineration of Ti-salt flocculated sludge at 600°C. The physio-chemical properties of BTSE, Ti-salt flocculated BTSE and titania photocatalysts were investigated. The photocatalytic activity of titania was examined using different substrates of rhodamine B and humic acid under UV light irradiation. Results indicated that the flocculation performance of Ti-salt was not affected by the seasonal variation of BTSE. BTSE characteristics resulted in marginal effect in titania characterisation and photocatalytic activity. Titania photocatalysts produced from Ti-salt flocculated sludge in different seasons showed constant anatase phase, high BET surface area and high photocatalytic activity.
authors.affiliation: School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), P.O. Box 123, Broadway, NSW 2007, Australia.
authors.forename: Y
authors.initials: Y
authors.lastname: Okour
authors.forename: H K
authors.initials: HK
authors.lastname: Shon
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: J B
authors.initials: JB
authors.lastname: Kim
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000468:Alkalies / Q000737:chemistry; D002384:Catalysis / Q000528:radiation effects; D005427:Flocculation / Q000528:radiation effects; D006244:Hardness / Q000528:radiation effects; D006812:Humic Substances / Q000032:analysis; D019216:Metals, Heavy / Q000302:isolation & purification; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009391:Nephelometry and Turbidimetry; D010758:Phosphorus / Q000302:isolation & purification; D056951:Photoelectron Spectroscopy; D012235:Rhodamines / Q000737:chemistry; D012621:Seasons; D012722:Sewage / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry*; D014466:Ultraviolet Rays; D014865:Waste Disposal, Fluid; D014961:X-Ray Diffraction
chemical_list: D000468:Alkalies; D006812:Humic Substances; D019216:Metals, Heavy; D012235:Rhodamines; D012722:Sewage; C009495:titanium dioxide; D010758:Phosphorus; D014025:Titanium; C029773:rhodamine B