Method for stabilizing radioactive cesium adsorbed on ferrocyanide

摘要

PROBLEM TO BE SOLVED: To provide a method for stabilization of radioactive cesium that decomposes ferrocyanide to eliminate the elution of cyanogen and can stably immobilize isolated Cs in a geopolymer.SOLUTION: A method for stabilization of radioactive cesium adsorbing to ferrocyanide comprises: mixing ferrocyanide to which radioactive cesium adsorbs and a geopolymer to form a product; burning the formed product at a temperature that is a decomposition temperature of the ferrocyanide or more to decompose the ferrocyanide; and immobilizing cesium isolated from the ferrocyanide in the burned product.