[2C04-06] Extraction Solvent for Minor Actinide Elements

[2C05] Exploration of Fluorinated Super-Solvents for Minor Actinide Extraction

(7) Solvent extraction behavior of Am and RE with fluorinated solvents and mixed solvents

*Fauzia Hanum Ikhwan¹, Masahiko Nakase¹, Tomohiro Okamura¹, Takahiro Nishihara¹, Takashi Kajitani¹, Chihiro Tabata², Tohru Kobayashi², Kota Matsui³, Ryo Takahashi⁴, Hitomi Ishida⁴ (1. Tokyo Tech, 2. JAEA, 3. Nagoya Univ., 4. MHI)

Keywords:Fluorinated super solvent, Mixture solvent, long-chained alcohol, Actinide, Solvent Extraction

In order to explore fluorinated super solvents for MA extraction, rare earth elements and Am were extracted with various solvents. In the exploration of solvents, designing and synthesizing various solvent molecules may not be practical. Therefore, we obtained extraction data of mixture solvents with fluorinated solvents and long-chain alcohols. In addition, to improve the engineering applicability, irradiation experiments with the Co-60 irradiation facility of Tokyo Tech and post-irradiation extraction tests were conducted. The results suggest that fluorinated solvents are extremely stable, resulting in significant degradation of the extractant. However, using mixed solvents reduced the degradation of the extractant, and secondary effects, such as a reduction in the temperature dependence of the extraction, were confirmed. In the presentation, the extraction data obtained in the project will be presented.