[2I05-09] Nuclide Adsorption & Separation 2

[2I05] Development of Minor Actinides separation and storage technology by process using flame-retardant and low heat of vaporization diluent and CHON extractant

(5)Construction of stabilized solidification through direct conversion method

*Tomoo Yamamura¹, Chihiro Tabata¹, Mariko Konaka¹, Masahiko Nakase², Miki Harigai², Kochi Kakinoki³, Ogawa Naoki³, Ryokichi Hamaguchi³, Taisuke Tsukamoto³, Takashi Shimada³ (1. KURNS, Kyoto Univ., 2. Tokyo Tech, 3. MHI)

Keywords:Minor Actinides, Storage, Direct transformation method, Fluorite structure, New diluent with low heat of vaporization, Solid solutions

Productions of uranium-based solid matrix containing Minor actinides (MA) separated by solvent extraction was investigated by using lanthanides by applying distillation and hydrothermal processes, in term of stable management of heat-generation materials. The report includes a new synthesis method of urnium oxide matrix with fluorite structure, and its solid solution with lanthanides.