Journal of Industrial and Engineering Chemistry, Vol.18, No.6, 1951-1955, November, 2012
Treatment characteristic of 1,4-dioxane by ozone-based advanced oxidation processes
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The effectiveness of different ozone-based advanced oxidation processes on the treatment of 1,4-dioxane in aqueous solution was investigated in a lab-scale reactor. The removal efficiency of 1,4-dioxane was studied under different initial pH and H2O2 concentrations. Degradation (18%) of COD was observed with the application of UV-C alone, but the degradation of COD was greatly enhanced by a combined method, O3/H2O2/UV (94%). It appears, however, that an excess amount of hydrogen peroxide in the solution retards the decomposition of 1,4-dioxane. At pH 10 and an H2O2/O3 ratio of 0.5, 1,4-dioxane in aqueous solution showed the highest degradation rate.
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