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Photodegradation of methyl tert-butyl ether (MTBE) by UV/H2O2 and UV/TiO2.
J Hazard Mater. 2008 Jun 15; 154(1-3):795-803.JH

Abstract

Two UV-based advanced oxidation processes (AOPs), UV/H2O2 and UV/TiO2, were tested in batch reactor systems to evaluate the removal efficiencies and optimal conditions for the photodegradation of methyl tert-butyl ether (MTBE). The optimal conditions at an initial MTBE concentration of 1 mM ([MTBE]0=1 mM) were acidic and 15 mM H2O2 in UV/H2O2 system, and pH 3.0 and 2.0 g/l TiO2 in UV/TiO2 suspended slurries system under 254-nm UV irradiation. Under the optimal conditions, MTBE photodegradation during the initial period of 60 min in UV/H2O2 and UV/TiO2 systems reached 98 and 80%, respectively. In both systems, MTBE photodegradation decreased with increasing [MTBE]0. While MTBE photodegradation rates increased with increasing dosage of H2O2 (5-15 mM) and TiO2 (0.5-3 g/l), further increase in the dosage of H2O2 (20 mM) or TiO2 (4 g/l) adversely reduced the MTBE photodegradation. Pseudo first-order kinetics with regard to [MTBE] can be used to describe the MTBE photodegradation in both systems. The pseudo first-order rate constants linearly increased with the increase in the molar ratio of [H2O2]0 to [MTBE]0 in UV/H2O2 system and linearly increased with the decrease in [MTBE]0 in UV/TiO2 system.

Authors+Show Affiliations

Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, People's Republic of China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18082954

Citation

Hu, Qinhai, et al. "Photodegradation of Methyl Tert-butyl Ether (MTBE) By UV/H2O2 and UV/TiO2." Journal of Hazardous Materials, vol. 154, no. 1-3, 2008, pp. 795-803.
Hu Q, Zhang C, Wang Z, et al. Photodegradation of methyl tert-butyl ether (MTBE) by UV/H2O2 and UV/TiO2. J Hazard Mater. 2008;154(1-3):795-803.
Hu, Q., Zhang, C., Wang, Z., Chen, Y., Mao, K., Zhang, X., Xiong, Y., & Zhu, M. (2008). Photodegradation of methyl tert-butyl ether (MTBE) by UV/H2O2 and UV/TiO2. Journal of Hazardous Materials, 154(1-3), 795-803.
Hu Q, et al. Photodegradation of Methyl Tert-butyl Ether (MTBE) By UV/H2O2 and UV/TiO2. J Hazard Mater. 2008 Jun 15;154(1-3):795-803. PubMed PMID: 18082954.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photodegradation of methyl tert-butyl ether (MTBE) by UV/H2O2 and UV/TiO2. AU - Hu,Qinhai, AU - Zhang,Chunlong, AU - Wang,Zhirong, AU - Chen,Yan, AU - Mao,Kehui, AU - Zhang,Xingqing, AU - Xiong,Yunlong, AU - Zhu,Miaojun, Y1 - 2007/11/13/ PY - 2007/03/31/received PY - 2007/09/05/revised PY - 2007/10/26/accepted PY - 2007/12/18/pubmed PY - 2008/7/30/medline PY - 2007/12/18/entrez SP - 795 EP - 803 JF - Journal of hazardous materials JO - J Hazard Mater VL - 154 IS - 1-3 N2 - Two UV-based advanced oxidation processes (AOPs), UV/H2O2 and UV/TiO2, were tested in batch reactor systems to evaluate the removal efficiencies and optimal conditions for the photodegradation of methyl tert-butyl ether (MTBE). The optimal conditions at an initial MTBE concentration of 1 mM ([MTBE]0=1 mM) were acidic and 15 mM H2O2 in UV/H2O2 system, and pH 3.0 and 2.0 g/l TiO2 in UV/TiO2 suspended slurries system under 254-nm UV irradiation. Under the optimal conditions, MTBE photodegradation during the initial period of 60 min in UV/H2O2 and UV/TiO2 systems reached 98 and 80%, respectively. In both systems, MTBE photodegradation decreased with increasing [MTBE]0. While MTBE photodegradation rates increased with increasing dosage of H2O2 (5-15 mM) and TiO2 (0.5-3 g/l), further increase in the dosage of H2O2 (20 mM) or TiO2 (4 g/l) adversely reduced the MTBE photodegradation. Pseudo first-order kinetics with regard to [MTBE] can be used to describe the MTBE photodegradation in both systems. The pseudo first-order rate constants linearly increased with the increase in the molar ratio of [H2O2]0 to [MTBE]0 in UV/H2O2 system and linearly increased with the decrease in [MTBE]0 in UV/TiO2 system. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18082954/Photodegradation_of_methyl_tert_butyl_ether__MTBE__by_UV/H2O2_and_UV/TiO2_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01579-8 DB - PRIME DP - Unbound Medicine ER -