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Chemical oxidative degradation of methyl tert-butyl ether in aqueous solution by Fenton's reagent.
Chemosphere. 2004 Apr; 55(1):73-9.C

Abstract

Degradation of methyl tert-butyl ether (MTBE) in aqueous solution by Fenton's reagent (Fe2+ and H2O2) was investigated. Effects of reaction conditions on the oxidation efficiency of MTBE by Fenton's reagent were examined in batch experiments. Under optimum conditions, 15 mM H2O2, 2 mM Fe2+, pH 2.8 and room temperature, the initial 1 mM MTBE solution was reduced by 99% within 120 min. Results showed that MTBE was decomposed in a two-stage reaction. MTBE was first decomposed swiftly based on a Fe2+/H2O2 reaction and then decomposed somewhat less rapidly based on a Fe3+/H2O2 reaction. The detection of Fe2+ also supported the theory of the two-stage reaction for the oxidation of MTBE by Fenton's reagent. The dissolved oxygen in the solution decreased rapidly in the first stage reaction, but it showed a slow increase in the second stage with a zero-order kinetics. A reaction mechanism involving two different pathways for the decomposition of MTBE by Fenton's reagent was also proposed. Chemicals including tert-butyl formate, tert-butyl alcohol, methyl acetate and acetone were identified to be the primary intermediates and by-products of the degradation processes.

Authors+Show Affiliations

Laboratory of Environmental Toxicology, Department of Ecology & Biodiversity, The University of Hong Kong, Pokfulam Road, SAR, Hong Kong, People's Republic of China.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

14720549

Citation

Xu, Xiang-Rong, et al. "Chemical Oxidative Degradation of Methyl Tert-butyl Ether in Aqueous Solution By Fenton's Reagent." Chemosphere, vol. 55, no. 1, 2004, pp. 73-9.
Xu XR, Zhao ZY, Li XY, et al. Chemical oxidative degradation of methyl tert-butyl ether in aqueous solution by Fenton's reagent. Chemosphere. 2004;55(1):73-9.
Xu, X. R., Zhao, Z. Y., Li, X. Y., & Gu, J. D. (2004). Chemical oxidative degradation of methyl tert-butyl ether in aqueous solution by Fenton's reagent. Chemosphere, 55(1), 73-9.
Xu XR, et al. Chemical Oxidative Degradation of Methyl Tert-butyl Ether in Aqueous Solution By Fenton's Reagent. Chemosphere. 2004;55(1):73-9. PubMed PMID: 14720549.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Chemical oxidative degradation of methyl tert-butyl ether in aqueous solution by Fenton's reagent. AU - Xu,Xiang-Rong, AU - Zhao,Zhen-Ye, AU - Li,Xiao-Yan, AU - Gu,Ji-Dong, PY - 2004/1/15/pubmed PY - 2004/3/18/medline PY - 2004/1/15/entrez SP - 73 EP - 9 JF - Chemosphere JO - Chemosphere VL - 55 IS - 1 N2 - Degradation of methyl tert-butyl ether (MTBE) in aqueous solution by Fenton's reagent (Fe2+ and H2O2) was investigated. Effects of reaction conditions on the oxidation efficiency of MTBE by Fenton's reagent were examined in batch experiments. Under optimum conditions, 15 mM H2O2, 2 mM Fe2+, pH 2.8 and room temperature, the initial 1 mM MTBE solution was reduced by 99% within 120 min. Results showed that MTBE was decomposed in a two-stage reaction. MTBE was first decomposed swiftly based on a Fe2+/H2O2 reaction and then decomposed somewhat less rapidly based on a Fe3+/H2O2 reaction. The detection of Fe2+ also supported the theory of the two-stage reaction for the oxidation of MTBE by Fenton's reagent. The dissolved oxygen in the solution decreased rapidly in the first stage reaction, but it showed a slow increase in the second stage with a zero-order kinetics. A reaction mechanism involving two different pathways for the decomposition of MTBE by Fenton's reagent was also proposed. Chemicals including tert-butyl formate, tert-butyl alcohol, methyl acetate and acetone were identified to be the primary intermediates and by-products of the degradation processes. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/14720549/Chemical_oxidative_degradation_of_methyl_tert_butyl_ether_in_aqueous_solution_by_Fenton's_reagent_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(03)01133-0 DB - PRIME DP - Unbound Medicine ER -