Abstract
Disposal of waste becomes the problem with radioactive cesium caused by the first Fukushima nuclear plant accident of March 2011. In this study, we focused on the coastal disposal facility which can dispose of the mass waste and developed the cutoff materials for the disposal facility. As a cutoff materials for the disposal facility, we mixed bentonite and zeolite in marine clay and examined the cutoff performance and the adsorption performance for cesium by an indoor experiment.
As a result of experiment, the cutoff performance improved by adding bentonite to marine clay and maintained regardless of addition in zeolite. In addition, the adsorption performance for cesium reduced by adding bentonite to marine clay, but improved drastically by addition in zeolite.
