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Report No.

Current status of R&D on minor actinide separation process with CHON Extractants in JAEA

Matsumura, Tatsuro  ; Ban, Yasutoshi  ; Suzuki, Hideya; Tsubata, Yasuhiro   ; Hotoku, Shinobu ; Tsutsui, Nao  ; Suzuki, Asuka; Toigawa, Tomohiro   ; Kurosawa, Tatsuya*; Shibata, Mitsunobu*; Kawasaki, Tomohiro*; Ishii, Sho*

To continue the utilization of the nuclear fission energy, the management of the high-level radioactive waste is one of the most important issues to be solved. Partitioning and Transmutation technology is expected to be effective to mitigate the burden of the HLW disposal by reducing the radiological toxicity and heat generation. JAEA has been conducting R&D on the MA separation process to remove of MA from HLW and supply the recovered MA to the transmutation system such as ADS. The MA separation process contains three steps. For An(III)+RE recovery process, we developed TDdDGA which has very high performance to recover of MA from high level waste. HONTA and ADAAM were developed for An(III)/RE separation process and Am/Cm separation process respectively. All extractants satisfy CHON principle to minimization of the secondary waste from the process. The separation performances of the flowsheets were evaluated by continuous extraction tests using simulated and genuine high level liquid waste.



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