Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 40, Issue 19, Pages 6098-6103Publisher
AMER CHEMICAL SOC
DOI: 10.1021/es060883f
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The application of electrokinetic treatment to phenol contaminated soil combined with the addition of a chemical oxidant ( permanganate) to the catholyte has been evaluated. It was found that the counter-current flow of the phenol (by electrosmosis) and permanganate (by electromigration) leads to a rapid oxidation of the phenol in the soil. After 5 days of treatment over 90% of the phenol ( initial concentration 1 g kg(-1) dry soil) in a 15 cm long container of kaolin was removed by electrokinetic treatment with a voltage gradient of 1 V cm(-1) and an initial concentration of KMnO4 of 9 g L-1 in the catholyte. This level of treatment was achieved with an electrical energy consumption of less than 15 kWh per m(3) of soil treated.
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