| 摘要 |
PROBLEM TO BE SOLVED: To provide a radioactive element adsorbent that can efficiently and rapidly adsorb and remove a radioactive element, and can further prevent the radioactive element from flowing out by rainwater or the like from the adsorbent on which the radioactive element is adsorbed.SOLUTION: The radioactive element adsorbent contains a granular material composition including (A) one kind or two kinds or more of volcanic ejecta foams and (B) inorganic salt exhibiting alkaline so that a weight ratio of (A) and (B) [(A):(B)] is between 1:0.3 and 1:1.5. |
