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http://dx.doi.org/10.5322/JES.2006.15.3.193

Removal Characteristics of 1,4-dioxane with O3/H2O2 and O3/Catalyst Advanced Oxidation Process  

Park, Jin-Do (School of Chemical Engineering & Bioengineering, University of Ulsan)
Suh, Jung-Ho (Department of Environmental & life Chemistry, UIsan College)
Lee, Hak-Sung (School of Chemical Engineering & Bioengineering, University of Ulsan)
Publication Information
Journal of Environmental Science International / v.15, no.3, 2006 , pp. 193-201 More about this Journal
Abstract
Advanced oxidation processes involving $O_3/H_2O_2$ and $O_3/catalyst$ were used to compare the degradability and the effect of pH on the oxidation of 1,4-dioxane, Oxidation processes were carried out in a bubble column reactor under different pH. Initial hydrogen peroxide concentration was 3.52 mM in $O_3/H_2O_2$ process and 115 g/L (0.65 wt.%) of activated carbon impregnated with palladium was packed in $O_3/catalyst$ column. 1,4-dioxane concentration was reduced steadily with reaction time in $O_3/H_2O_2$ oxidation process, however, in case of $O_3/catalyst$ process, about $50{\sim}75%$ of 1,4-dioxane was degraded only in 5 minutes after reaction. Overall reaction efficiency of $O_3/catalyst$ was also higher than that of $O_3/H_2O_2$ process. TOC and $COD_{cr}$ were analyzed in order to examine the oxidation characteristics with $O_3/H_2O_2\;and\;O_3/catalyst$ process. The results of $COD_{cr}$ removal efficiency and ${\Delta}TOC/{\Delta}ThOC$ ratio in $O_3/catalyst$ process gave that this process could more proceed the oxidation reaction than $O_3/H_2O_2$ oxidation process. Therefore, it was considered that $O_3/catalyst$ advanced oxidation process could be used as a effective oxidation process for removing non-degradable toxic organic materials.
Keywords
1,4-dioxane; $Ozone/H_2O_2$; Ozone/catalyst; Pd/Activated carbon; Advanced oxidation process;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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