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Oxidative Degradation Kinetics of Trichloroethylene in Groundwater by Permanganate  

Yang, Seung-Guan (Department of Civil Engineering, Environmental Research Center, Kyunghee University)
Ko, Seok-Oh (Department of Civil Engineering, Environmental Research Center, Kyunghee University)
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Abstract
A laboratory study was conducted to evaluate the kinetics of oxidation of trichloroethylene(TCE) in groundwater by potassium permanganate($KMnO_4$). Consumption of permanganate by TCE and aquifer material was also evaluated to obtain an appropriate injection rate of $KMnO_4$. TCE degradation by $KMnO_4$ in the absence of aquifer material was effective with a pseudo-first order rate constant, $k_{obs}=5.24{\times}10^{-3}s^{-1}\;at\;KMnO_4=500mg/L$. TCE oxidation by $KMnO_4$ was found to be second order reaction and the rate constant, $k=0.65{\pm}0.08M^{-1}s^{-1}$. Meanwhile, aquifer materials from the field site were actively reacted with permanganate, resulting in the significant consumption of $KMnO_4$. It might be attributed to the existence of metal oxides in the aquifer materials.
Keywords
Trichloroethylene(TCE); Permanganate; Aquifer; Oxidation Kinetic; Groundwater Remediation;
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