Development of ORGA process for simultaneous recovery of all actinides from spent fuel, 1; Extraction of -elements by CMPO in fluorinated diluents

Ozawa, Masaki; Shadrin, A. Y.*; Babain, V.*; Zilberman, B.*; Strelkov, S.*

no journal, , 

Partitioning and transmutation of long-lived actinides in spent fuel is required for decreasing the radioactive toxicity in nuclear fuel cycle. In collaboration with the Khlopin Radium Institute in St.Petersburg, fundamental extraction and stripping behaviors of f-elements and FPs were studied. New solvent composed of CMPO dissolved in TBP with fluorinated diluents such as metanitrobenzo-trifluoride showed high solubility for extracted metal complexes, and therby expanding the boundary of non-third phase formation. Obtained extraction data suggested the compatibility of ORGA process (Organophosporyl-fluoropole extractant for Recovery of Group of Actinides) as for recovering all actinides in a single extraction cycle.