Fractionation of liquid highly-radioactive wastes and incorporation of long-lived radionuclides into ceramics and vitreous compositions

The combination of the HLW fractionation flowsheet with a subsequent incorporation of concentrates into vitreous-like or ceramic compositions enables us to use some radionuclides and to more efficiently realize a concept of final waste disposal. The investigations of the properties of extractants based on carborene complexes resulted in the development of a technological flowsheet for cesium and strontium recovery. Along with these works, investigations of the extraction of trivalent elements were conducted. In this paper, the conditions are elaborated for incorporation of simulated concentrates of long-lived radionuclides into vitreous and ceramic compositions which could be considered as forms for final disposal