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Report No.

Recovery of LLFP from high-level liquid waste, 3; Properties of solvent for the replacement of n-dodecane

Sasaki, Yuji  ; Suzuki, Shinichi; Kobayashi, Toru ; Ito, Keisuke*; Takahashi, Yuya*; Kaneko, Masaaki*; Asano, Kazuhito*

At ImPACT project, we investigate more safety and effect disposal method by using separation of long-lived radioactive nuclides and their transmutation from high-level radioactive waste (HLW). High concentration of Zr in simulated HLW is extracted by HDEHP or TODGA, so we study on properties of diluents instead of n-dodecane. Especially we study on the radiolysis. After irradiation of TODGA dissolved in different 5 diluents, we use these extraction solvents as solvent extraction of Nd. It is found that distribution ratio of Nd decrease with irradiation time.



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