Selective Properties of Sorbent Agent Zeolite NaA for Molten Salt Treatment

Abstract

There was considered one from the most advanced method of radioactive waste treatment, exhaust salt melt, the method of sorption purification with the use of sorbent agent zeolite NaA. There was investigated the behavior of alkaline, alkaline-earth and rare earth elements. There was demonstrated that zeolite NaA possesses selective properties in relation to cesium, strontium, barium and lanthanum, mimics of fission products during molten salt treatment. On the base of conducted investigations there was offered to conduct sorption purification on zeolite NaA or its derivatives, for the purpose of regeneration of exhaust salt melts that used in non-aqueous methods of radioactive waste treatment and reduction of radioactive waste's quantity. There were give estimations of upper boundary of sorption purification duration in respect to processes of exhaust salt melts, containing fission products.