| 摘要 |
PROBLEM TO BE SOLVED: To provide a treating method for radioactive cesium-contaminated objects that serves to raise the volume reduction rate of substances containing radioactive cesium and at the same time to obtain radiation shielding materials.SOLUTION: Radioactive cesium is volatilized from substance C contaminated with radioactive cesium, the resultant volatilized radioactive cesium is cooled to recover concentrated salt D of radioactive cesium, the recovered concentrated salt is washed with water, and at least one out of lead, zinc and copper contained in the solid content obtained by the washing with water is collected. The radioactive cesium contained in the filtrate obtained by the washing with water is collected by having it adsorbed by adsorbent A, and at least one chosen out of the separately collected lead, zinc and copper is caused to surround, as radiation shielding material, the adsorbent having adsorbed the radioactive cesium.SELECTED DRAWING: Figure 1 |
