System for the Transfer of Long-Lived Radioactive Nuclides from Spent Organic Ion-Exchange Resins from Nuclear Power Stations to Zeolites -Titanates

摘要

In order to immobilise radioactive wastes bound in organic ion exchange resin more safely and compactly a simple method for transferring them to zeolites and titanates has been developed. The study has been concentrated on Cs-137, Sr-90 and Co-60. These were eluted from the resins by solutions of sodium citrate or tartarate with an effectiveness of well over 99.9 percent, for Cs-137 and Sr-90 and 97-98 percent for Co-60. Sorption in zeolite and titanate appears to be more effective than elution, and a ten-fold volume reduction from the spent resins to the final sintered products seems to be a reasonable expectation. (Atomindex citation 11:528967)