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Simultaneous decontamination of hexavalent chromium and methyl tert-butyl ether by UV/TiO2 process.
Chemosphere. 2006 Apr; 63(2):254-60.C

Abstract

Hexavalent chromium and methyl tert-butyl ether (MTBE) are two important environmental pollutants. Simultaneous decontamination of Cr(VI) and MTBE was studied by UV/TiO2 process. The influences of pH and the concentrations of pollutants on the kinetics of the photocatalytic reactions were evaluated. Dark adsorption tests showed that the acidic pH favored the adsorption of Cr(VI) while neutral pH favored the adsorption of MTBE. Under UV irradiation, Cr(VI) reduction was observed in Cr(VI)/TiO2 system, and MTBE oxidation was observed in MTBE/TiO2 system. The system containing Cr(VI) and MTBE by UV/TiO2 process demonstrated the synergistic effect between oxidation of MTBE and reduction of Cr(VI). The results demonstrated that two pollutants Cr(VI) and MTBE could be eliminated simultaneously by UV/TiO2 process. tert-Butyl formate, tert-butyl alcohol and acetone were identified as primary degradation products of MTBE by gas chromatography-mass spectrometry in the degradation of MTBE by UV/TiO2 process.

Authors+Show Affiliations

Department of Ecology and Biodiversity, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, PR China. xuxr@hkucc.hku.hkNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

16169572

Citation

Xu, Xiang-Rong, et al. "Simultaneous Decontamination of Hexavalent Chromium and Methyl Tert-butyl Ether By UV/TiO2 Process." Chemosphere, vol. 63, no. 2, 2006, pp. 254-60.
Xu XR, Li HB, Gu JD. Simultaneous decontamination of hexavalent chromium and methyl tert-butyl ether by UV/TiO2 process. Chemosphere. 2006;63(2):254-60.
Xu, X. R., Li, H. B., & Gu, J. D. (2006). Simultaneous decontamination of hexavalent chromium and methyl tert-butyl ether by UV/TiO2 process. Chemosphere, 63(2), 254-60.
Xu XR, Li HB, Gu JD. Simultaneous Decontamination of Hexavalent Chromium and Methyl Tert-butyl Ether By UV/TiO2 Process. Chemosphere. 2006;63(2):254-60. PubMed PMID: 16169572.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous decontamination of hexavalent chromium and methyl tert-butyl ether by UV/TiO2 process. AU - Xu,Xiang-Rong, AU - Li,Hua-Bin, AU - Gu,Ji-Dong, Y1 - 2005/09/16/ PY - 2005/04/05/received PY - 2005/07/21/revised PY - 2005/07/29/accepted PY - 2005/9/20/pubmed PY - 2006/6/24/medline PY - 2005/9/20/entrez SP - 254 EP - 60 JF - Chemosphere JO - Chemosphere VL - 63 IS - 2 N2 - Hexavalent chromium and methyl tert-butyl ether (MTBE) are two important environmental pollutants. Simultaneous decontamination of Cr(VI) and MTBE was studied by UV/TiO2 process. The influences of pH and the concentrations of pollutants on the kinetics of the photocatalytic reactions were evaluated. Dark adsorption tests showed that the acidic pH favored the adsorption of Cr(VI) while neutral pH favored the adsorption of MTBE. Under UV irradiation, Cr(VI) reduction was observed in Cr(VI)/TiO2 system, and MTBE oxidation was observed in MTBE/TiO2 system. The system containing Cr(VI) and MTBE by UV/TiO2 process demonstrated the synergistic effect between oxidation of MTBE and reduction of Cr(VI). The results demonstrated that two pollutants Cr(VI) and MTBE could be eliminated simultaneously by UV/TiO2 process. tert-Butyl formate, tert-butyl alcohol and acetone were identified as primary degradation products of MTBE by gas chromatography-mass spectrometry in the degradation of MTBE by UV/TiO2 process. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16169572/Simultaneous_decontamination_of_hexavalent_chromium_and_methyl_tert_butyl_ether_by_UV/TiO2_process_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(05)00966-5 DB - PRIME DP - Unbound Medicine ER -