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Continuous extraction and separation of Am$$^{3+}$$ and Cm$$^{3+}$$ using a high-performance ligand

Suzuki, Hideya; Tsubata, Yasuhiro   ; Toigawa, Tomohiro   ; Matsumura, Tatsuro  

The separation of minor actinide (MA) from HLLW is an important task in the partitioning and transmutation. After MA are separated from HLLW, the mutual separation of Am$$^{3+}$$ and Cm$$^{3+}$$ (Am/Cm separation) can be conducted. A highly practical reagent, called alkyl diamide amine (ADAAM), was developed. ADAAM gives the maximum separation factor up to 5.5. A continuous extraction test was conducted using a multistage countercurrent mixer-settler extractor with ADAAM in n-dodecane. Separation of Am and Cm was demonstrated in very high yield.

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