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Aqueous oxidation of dimethyl phthalate in a Fe(VI)-TiO(2)-UV reaction system.
Water Res. 2008 Mar; 42(6-7):1413-20.WR

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)-TiO(2)-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 N(2) and O(2) 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 TiO(2) adsorption capacity for DMP. In the presence of typical environmental levels of DO (approximately 9mgL(-1)), the Fe(VI)-TiO(2)-UV process achieved a modest degree of DMP degradation (40% in 120min).

Authors+Show Affiliations

Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17977571

Citation

Yuan, Bao-Ling, et al. "Aqueous Oxidation of Dimethyl Phthalate in a Fe(VI)-TiO(2)-UV Reaction System." Water Research, vol. 42, no. 6-7, 2008, pp. 1413-20.
Yuan BL, Li XZ, Graham N. Aqueous oxidation of dimethyl phthalate in a Fe(VI)-TiO(2)-UV reaction system. Water Res. 2008;42(6-7):1413-20.
Yuan, B. L., Li, X. Z., & Graham, N. (2008). Aqueous oxidation of dimethyl phthalate in a Fe(VI)-TiO(2)-UV reaction system. Water Research, 42(6-7), 1413-20.
Yuan BL, Li XZ, Graham N. Aqueous Oxidation of Dimethyl Phthalate in a Fe(VI)-TiO(2)-UV Reaction System. Water Res. 2008;42(6-7):1413-20. PubMed PMID: 17977571.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Aqueous oxidation of dimethyl phthalate in a Fe(VI)-TiO(2)-UV reaction system. AU - Yuan,Bao-Ling, AU - Li,Xiang-Zhong, AU - Graham,Nigel, Y1 - 2007/10/13/ PY - 2007/06/28/received PY - 2007/10/08/revised PY - 2007/10/10/accepted PY - 2007/11/6/pubmed PY - 2008/8/1/medline PY - 2007/11/6/entrez SP - 1413 EP - 20 JF - Water research JO - Water Res. VL - 42 IS - 6-7 N2 - 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)-TiO(2)-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 N(2) and O(2) 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 TiO(2) adsorption capacity for DMP. In the presence of typical environmental levels of DO (approximately 9mgL(-1)), the Fe(VI)-TiO(2)-UV process achieved a modest degree of DMP degradation (40% in 120min). SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/17977571/Aqueous_oxidation_of_dimethyl_phthalate_in_a_Fe_VI__TiO_2__UV_reaction_system_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(07)00644-6 DB - PRIME DP - Unbound Medicine ER -