| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaning method for effectively removing radiation contaminants.SOLUTION: In calcined zeolite powder 4, Na and the like are removed from a pore, and as a whole, the zeolite powder 4 is charged negatively. As the result, contaminants 2 such as cesium 137 charged positively are electrostatically attracted to enter the pore of the zeolite powder 4, are adsorbed and held as they are, and do not exist in water. Then, the zeolite powder 4 having adsorbed the contaminants is held in a gel of a three-dimensional network structure in which a water-absorbing polymer is swelled. |
