Thermodynamic Studies to Support Actinide/Lanthanide Separations

Rao, Linfeng¹ 

[1] Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

关键词: TALSPEAK PROCESS;    HEDTA;    RARE EARTHS;    ACTINIDES;    TEMPERATURE RANGE 0273-0400 K;    TEMPERATURE DEPENDENCE;    CONTROL;    NEPTUNIUM COMPLEXES;    URANIUM COMPLEXES;    PHOSPHONIC ACID ESTERS;    THERMODYNAMIC PROPERTIES;   

DOI  :  10.2172/1229561
RP-ID  :  LBNL--189581
PID  :  OSTI ID: 1229561
Others  :  Other: ir:189581
Others  :  TRN: US1600174

美国|英语

来源: SciTech Connect

【 摘 要 】

This milestone report summarizes the data obtained in FY15 on the complexation of HEDTA with Np(V) and U(VI) in a temperature range from 25 to 70?��C. The results show the effect of temperature on the chemical speciation of Np(V) and U(VI) in the modified TALSPEAK Process, and help to evaluate the effectiveness of the process when the operation envelope (e.g., temperature) varies. Eventually, the results from this study will help to achieve a better control of the separation process based on the HEDTA/HEH[EHP] combination.