Immobilisation in Cement of Ion Exchange Resins Arising from the Purification of Reagents Used for the Decontamination of Reactor Circuits. Third Semestrial Report July-December 1987

摘要

The aim of the program is to show that ion exchange resins used to remove activity from decontaminating agents used in water reactors can be successfully immobilized in cement. To achieve this, blends of Ordinary Portland Cement and ground granulated Blast Furnace Slag (ratio 9:1) have been used. Improvements in the properties of the product and the waste loading of 50 w/o damp resin can be achieved using microsilica, a finely divided form of silicon dioxide, as an additive to the blended cement. This report contains data on the effects of anion resins, and mixed anion/cation resins, on the performance of the cemented product. The effects of organic acids, especially picolinic and formic acids, bound to anion resins have also been investigated. In addition, formulations developed have been assessed at commercial scale (200 litres of cemented product) for their process and product characteristics. The final part of the report deals with the long-term product performance of samples prepared from cation resins which are now nearly one year old. (Atomindex citation 20:035134)