Adsorptive Separation Of Rhenium/Technetium Using AR-01Resin And Synthesis Of Silica-based Ion Exchange Resin By Radiation Grafting

99Tc is one of the fission products generated during the operation ofnuclear power plants with a relatively high fission yield. It is a long-livedradionuclide and has high mobility in the environment, thus separatingtechnetium from high level liquid waste has significant meaning.In this article, rhenium is selected to simulate the adsorption behaviorof technetium, both static and dynamic adsorption experiments areinvestigated using a new silica-based macro-porous resin AR-01.Reductive elution is studied to improve the efficiency of elution. Staticexperiment results show that the adsorption reaction is exothermic,increasing the acid concentration will decrease the adsorption, and thestatic adsorption capacity of the resin is111.1mg/g dry resin.30mmol/LSnCl2in1mol/L HCl can elute the rhenium absorbed by the resineffectively. The results of dynamic experiment prove that AR-01resin ispotential for the separation of technetium from high level liquid waste.The results from the above studies confirm the advantages of the newSiO2-P material as an ion exchange resin matrix. In this paper, thesynthesis of novel anion exchange resin based on the SiO2-P material byradiation grafting is evaluated. The optimal experimental conditions for theradiation grafting are studied, which offers useful reference to synthesisnew silica-based ion exchangers which can be applied for HLLWreprocessing.