Radioactive Tracer Technique in Characterization of Nuclear Grade Anion Exchange Resins Indion-102 and Indion GS-300

摘要

In the present study, attempt is made to characterize two strongly basic nuclear grade anion exchange resins Indion-102 and Indion GS-300. The characterization of the resins is made based on kinetics study by application of radioactive tracer technique using 131I and 82Br isotopes. It is observed that the iodide ion-isotopic exchange reaction take place at a faster rate than bromide ion-isotopic exchange reaction which is mainly due to solvation effect. The results indicate that both the iodide and bromide ion-isotopic exchange reactions are greatly influenced by the ionic concentration and the exchange increases with increase in ionic concentration. However the same ion-isotopic exchange is observed to decrease with rise in temperature. It is also observed that specific reaction rate (min-1), amount of ion exchanged (mmol) and percentage of ions exchanged for Indion GS-300 resins are higher than that for Indion-102 resins under identical experimental conditions.