METHOD FOR PREPARING CESIUM AND STRONTIUM RE- EXTRACT TO ION-EXCHANGE SORPTION Russian patent published in 2002 - IPC

FIELD: recovery of radioactive solutions. SUBSTANCE: method used in recovering radioactive solutions incorporating in their composition radioactive components, water-repelling and/or water-absorbing organic materials, and nitric acid involves cesium and strontium settling down, their dilution with distilled water and/or heating-steam condensate, and concentration by evaporation at 90-105 C. Steam phase incorporating nitric acid, water- repelling and/or water-absorbing organic material is condensed. Re- extract condensed by evaporation is conveyed for ion-exchange sorption. EFFECT: improved characteristics of cesium and strontium ion-exchange sorption from nitric solutions, enhanced quality of end product. 2 cl