Radiation Chemistry of Advanced TALSPEAK Flowsheet

Technical Report · Wed Aug 28 00:00:00 EDT 2013

DOI:https://doi.org/10.2172/1105100· OSTI ID:1105100

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

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.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1105100
• Report Number(s): PNNL-22712; AF5805000
• Country of Publication: United States
• Language: English

Related Subjects

TALSPEAK
HDEHP
HEH[EHP]
radiolysis
actinide separation
lanthanide separation