RADIOACTIVE SUBSTANCE ADSORBENT, AND COLLECTION METHOD AND COLLECTION APPARATUS OF RADIOACTIVE SUBSTANCE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a radioactive substance adsorbent excellent in adsorption performance of a radioactive substance, and a collection method and a collection apparatus of the radioactive substance using the same.SOLUTION: The radioactive substance adsorbent includes a hexa-cyano ferric acid compound represented by a general formula: NaNi[Fe(CN)], where in the formula, x and y represent real numbers, x+2y=3 is satisfied when Fe is trivalent iron, and x+2y=4 is satisfied when Fe is divalent iron. The collection method of the radioactive substance including the absorption step of adsorbing the radioactive substance using the radioactive substance adsorbent contacts the radioactive substance adsorbent with a water liquid or gas including the radioactive substance to adsorb the radioactive substance. The collection apparatus includes an adsorption bed having the radioactive substance adsorbent held by carriers containing moisture and gas supply means for supplying the gas including the radioactive substance to the adsorption bed.