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Effect of Chlorides and Sulfates on the Performance of a Fe 3+/H 2O 2 Fenton-Like System in the Degradation of Methyl Tert-Butyl Ether and its Byproducts

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Abstract:

The effect of chloride and sulfate ions on the oxidation of methyl tert-butyl ether (MTBE) and its degradation products in a Fenton-like system was studied. Although both chloride and sulfate ions inhibited the decomposition of H 2O 2, chlorides were found to be the more effective inhibitor of MTBE degradation. In the presence of sulfates, MTBE decomposition can be attributed to oxidation not only by hydroxyl radicals, but also likely by SO 4 ·− species. In the presence of chloride ions, it is possible that the dichloride radical is formed, which is less reactive than OH•. In the system under investigation, t-butyl alcohol was found to be the major byproduct, followed by t-butyl formate and acetone. The degradation rates of all intermediates and their inhibition in the presence of inorganic ions are similar to those obtained for MTBE, although their distributions are related to the concentrations of inorganic salts added.

Keywords: Fenton-like process; chlorides; degradation; inorganic ions; methyl tert-butyl ether; sulfates

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143007X238465

Publication date: October 1, 2007

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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