Detailed investigation on the effect of washing TiO<inf>2</inf>prepared from tisalts flocculated wastewater sludge

Publication Type:
Journal Article
Citation:
Journal of Advanced Oxidation Technologies, 2009, 12 (2), pp. 194 - 201
Issue Date:
2009-01-01
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In this study, the effect of washing TiO2produced from flocculated sludge was investigated. Produced TiO2was washed with HCl, NaOH and Milli-Q-water and the washed TiO2was then characterized in terms of X-ray diffraction imaging, scanning electron microscope/energy dispersive using X-ray analysis and surface area. Washed TiO2was tested for adsorption and photocatalytic oxidation of acetaldehyde, and the decomposition of organics from synthetic wastewater (SWW) in terms of total organic carbon (TOC) and absorbance at UV-254. Results revealed that the anatase structure was dominant and TiO2was mainly doped with C atoms. The surface area of TiO2generated form TiCl4flocculation was found to be twice larger than the TiO2generated from Ti(SO4)2flocculation. Acid and base washings of TiO2improved its photocatalytic ability in decomposing acetaldehyde under UV-irradiation. Similarly, acid, base and Milli-Q water washings of TiO2were better in reducing TOC and humic acids from SWW. ©2009 Science & Technology Network, Inc.
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