Abstract
The accident at Fukushima Dai-ichi Nuclear Power Plant in 2011 contaminated a large area of Fukushima, and the waste resulting from the decontamination of the area has been increasing. Its volume reduction is a very important subject. The radioactive material deposited on the area is cesium, and the application of both electrokinetic remediation（EK）and a specific adsorbent for cesium can clean up the cesium contaminated soil for reuse. The authors tried an EK process to remove natural cesium in the black soil. The desorption of the cesium from the soil is the process dominating the efficiency. EK efficiency for cesium removal was low, but it was improved for the cesium added to the soil because of its dependence on the interaction between the cesium and the soil. The desorption step should be improved in order to apply EK process to the volume reduction of the decontamination waste.
