作者: Wei R. Chen , Changlong Wu , Michael S. Elovitz , Karl G. Linden , I.H. (Mel) Suffet
DOI: 10.1016/J.WATRES.2007.07.037
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摘要: Abstract Second-order rate constants of the direct ozone reactions ( k O 3 , M ) and indirect OH radical OH,M for nine chemicals on US EPA's Drinking Water Contaminant Candidate List (CCL) were studied during ozonation ozone/hydrogen peroxide advanced oxidation process (O /H 2 AOP) using batch reactors. Except thiocarbamate herbicides (molinate EPTC), all other CCL (linuron, diuron, prometon, RDX, 2,4-dinitrotoluene, 2,6-dinitrotoluene nitrobenzene) show low reactivity toward ozone. The general magnitude can be explained by their structures electrophilic nature reactions. (except RDX) are highly reactive radicals as demonstrated high values. Ozonation at pH, which involves mainly reaction, is only efficient removal thiocarbamates. pH AOP will treatment in this study except shows lowest reactivity. Removal a contaminant does not mean complete mineralization reaction byproducts may problem if they recalcitrant likely to cause health concerns.