| abstract |
【Task】 An object of the present invention is to provide cation adsorbent particles that are used for removal / recovery of radioactive substances and that have high mechanical strength and can be easily separated from the object to be decontaminated while ensuring the ability to remove radioactive substances. [Solution] The present invention is a method for producing cation adsorbent particles, a step of preparing a slurry by mixing a dispersion of nanoparticle inorganic ion exchanger with a solution containing a gel raw material, The slurry is brought into contact with a solution containing calcium to form a capsule-like structure having a gel-like surface layer enriched with calcium and containing dispersed nano-particle inorganic ion exchangers, and drying By this, it is related with the said manufacturing method including the process of solidifying a capsule-like structure and shape | molding particle | grains. [Selection figure] None |