Development of sorption method for cesium-137 isolation from solutions of spent fuel reprocessing

Sorption characteristics of sorbents on the basis of copper, nickel and zinc ferrocyanides in relation to cesium ions are studied. Values of sorbent capacities by cesium from cesium nitrate and solution modeling purex-process raffinate are determined. Violation of sorption process reversibility with participation of nickel and zinc ferrocyanide by contact with model solution is shown. Cesium effective sorption from nitric acid solutions proceeds in presence of hydrozene compounds. Cesium adsorption is accomplished by nitric acid solution with 6-10 mole/l concentration. Sorption technology for cesium 137 extraction from reprocessed spent nuclear fuel was developed and introduced at the Mayak. 10 refs.; 3 tabs