Development of resonance neutron imaging technique to reveal ion separation behavior for extraction chromatography

Miyazaki, Yasunori  ; Watanabe, So  ; Nakamura, Masahiro  ; Shibata, Atsuhiro  ; Nomura, Kazunori  

High-level liquid waste generated by reprocessing spent nuclear fuel is geologically disposed after vitrification, and partitioning and transmutation of minor actinide (MA: Am, Cm) is performed to minimize the volume and toxicity of radioactive waste. We have been developing extraction chromatography for selective MA partitioning. The calculation code that simulates partitioning behavior of ions is developed, but the chromatogram is not yet reproduced adequately. The resonance neutron imaging at J-PARC allows us to observe partitioning behavior of ions inside the column undestructively. The obtained diffusion and dispersion data is applied to upgrade the simulation code as well as increase of column partition property.