Radiation Chemistry of Advanced TALSPEAK Flowsheet

Mincher, Bruce ; Peterman, Dean ; Mcdowell, Rocklan ; Olson, Lonnie ; Lumetta, Gregg J.

关键词: TALSPEAK;    HDEHP;    HEH[EHP];    radiolysis;    actinide separation;    lanthanide separation;   

DOI  :  10.2172/1105100
RP-ID  :  PNNL-22712
PID  :  OSTI ID: 1105100
Others  :  Other: AF5805000

美国|英语

来源: SciTech Connect

【 摘 要 】

This report summarizes the results of initial experiments designed to understand the radiation chemistry of an Advanced TALSPEAK process for separating trivalent lanthanides form the actinides. Biphasic aerated samples were irradiated and then analyzed for post-irradiation constituent concentrations and solvent extraction distribution ratios. The effects of irradiation on the TALSPEAK and Advanced TALSPEAK solvents were similar, with very little degradation of the organic phase extractant. Decomposition products were detected, with a major product in common for both solvents. This product may be responsible for the slight increase in distribution ratios for Eu and Am with absorbed dose, however; separation factors were not greatly affected.