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Destruction of Acetic Acid Using Various Combinations of Oxidants by an Advanced Oxidation Processes  

Kwon, Tae Ouk (Department of Chemical Engineering, Sunchon National University)
Park, Bo Bae (Department of Chemical Engineering, Sunchon National University)
Moon, Jang Soo (Korea Institute of Environmental Science and Technology)
Moon, Il Shik (Department of Chemical Engineering, Sunchon National University)
Publication Information
Applied Chemistry for Engineering / v.18, no.4, 2007 , pp. 314-319 More about this Journal
Abstract
The destruction of synthetic acetic acid wastewater was carried out using UV, $O_3$, $H_2O_2$, $Fe^{2+}$ oxidants in various combinations by the advanced oxidation processes. $UV/H_2O_2$, $UV/H_2O_2/Fe^{2+}$, $O_3$, $O_3/H_2O_2$, $UV/O_3/H_2O_2$, $UV/O_3/H_2O_2/Fe^{2+}$ processes were tested. $UV/H_2O_2/Fe^{2+}$, $O_3/H_2O_2$, $UV/O_3/H_2O_2$, $UV/O_3/H_2O_2/Fe^{2+}$ processes shows the most effective destruction efficiency at low pH (3.5) condition of wastewater, but $UV/H_2O_2$ and $O_3$ processes were observed less than 20%. Destruction efficiency was gradually increased with the reaction time in the $O_3/H_2O_2$ and $UV/O_3/H_2O_2$ processes, in case of the $UV/H_2O_2/Fe^{2+}$ and $UV/O_3/H_2O_2/Fe^{2+}$ processes shows rapid increasing of destruction efficiency within 90 min, then slightly decreasing with time. The destruction efficiencies of $UV/H_2O_2/Fe^{2+}$, $O_3/H_2O_2$, $UV/O_3/H_2O_2$ and $UV/O_3/H_2O_2/Fe^{2+}$ processes were observed 55, 66, 66 and 64%, respectively.
Keywords
acetic acid; ozone; advanced oxidation process; UV; iron catalyst;
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