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REMEDIATION OF TCE-CONTAMINATED GROUNDWATER USING KMNO4 OXIDATION: LABORATORY AND FIELD-SCALE STUDIES
Yang, Z.H., J.H. Ou, C.D. Dong, C.W. Chen, W.H. Lin, and C.M. Kao.
Environmental Science and Pollution Research [Publication online 19 Sept 2018 prior to print]

Objectives were to conduct laboratory bench and column experiments to determine the oxidation kinetics and optimal operational parameters for TCE-contaminated groundwater remediation using potassium permanganate (KMnO4) as oxidant and then to conduct a pilot-scale study to assess the efficiency of TCE remediation by KMnO4 oxidation. Results show that a significant amount of KMnO4 was depleted when it was added in a soil/water system due to the existence of natural soil organic matter. The effective influence zone of the KMnO4 oxidation was limited to within a 3-m radius of the injection area. To retain a higher TCE removal efficiency, a continuous supplement of high concentrations of KMnO4 is required.



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