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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2409

Title: Aqueous oxidation of dimethyl phthalate in a Fe(VI)-TiO₂-UV reaction system
Authors: Yuan, Bao-Ling
Li, Xiang-zhong
Graham, Nigel
Subjects: Dimethyl phthalate
Ferrate
Photocatalysis
Oxidation
Titanium dioxide
UV irradiation
Issue Date: Mar-2008
Publisher: Elsevier
Citation: Water research, Mar. 2008, v. 42, no. 6-7, p. 1413-1420.
Abstract: The application of a combined ferrate–photocatalysis process for the aqueous degradation of dimethyl phthalate (DMP) has been studied. The behaviour of the Fe(VI)-TiO₂-UV process at pH 9 in the presence and absence of dissolved oxygen (DO) has been compared and significant differences have been found. In comparative tests under N₂ and O₂ bubbling, the chemical reduction rate of ferrate as conduction band electron acceptor was similar, but the resulting degradation of DMP was substantially lower in the presence of oxygen. It is speculated that the presence of oxygen leads to the formation of Fe–O–(organic) complex species that adsorb to, and deactivate, the surface of the photocatalyst. The presence of surface-adsorbed complex species was indicated by FTIR spectroscopy and a reduced TiO₂ adsorption capacity for DMP. In the presence of typical environmental levels of DO (~9mgL⁻1), the Fe(VI)-TiO₂-UV process achieved a modest degree of DMP degradation (40% in 120 min).
Description: DOI: 10.1016/j.watres.2007.10.010
Rights: Water Research © 2007 Elsevier. The journal web site is located at http://www.sciencedirect.com.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/2409
ISSN: 0043-1354
Appears in Collections:CEE Journal/Magazine Articles

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