THIRD PHASE SUPPRESSION METHOD IN ACTINOID EXTRACTION SYSTEM BY DIAMIDE COMPOUND HAVING LONG-CHAIN ALKYL GROUP

摘要

PPROBLEM TO BE SOLVED: To suppress the generation of third phase, when solvent-extracting metal ions from a nitric acid water solution, such as spent fuel solution or high-level radioactive liquid waste by using nitric acid-dodecane two-phases. PSOLUTION: This method is used for solvent-extracting metal ions from a nitric acid water solution, such as spent fuel (SF) solution or high-level radioactive liquid waste (HLLW). In this method, generation of a third phase is suppressed, by using a solvent formed by diluting N, N, N', N'-tetradodecyl 1, 3-oxapentane diamide (TDoDGA), exhibiting high lipophilicity or diglycol amide (DGA) having alkyl chains longer that. PCOPYRIGHT: (C)2005,JPO&NCIPI