[2O19-22] Nuclide Separation and Recovery 2

[2O20] Separation and Recovery of LLFPs from Borosilicate Glass

(2)Separation of long-lived fission elements from simulated vitrified solids using the phase separation of glass

*Hiroyuki Inoue¹, Watanabe Yasuhiro¹ (1. The University of Tokyo)

Keywords:Simulated vitrified nuclear waste, Phase separation, Long-lived fission products, Dissolution

In order to extract desired components from vitrified nuclear waste, we proposed that new components are added and remelted the glass. The heat-treatment of the glasses promoted phase separation. The components desired from the phase separated glass could be dissolved into hot acidic solutions. We evaluated three kinds of additive components.