Selective Separation of Trivalent Actinides from Lanthanides by Aqueous Processing with Introduction of Soft Donor Atoms

Kenneth L. Nash ; Sue B. Clark ; Gregg Lumetta

关键词: ACTINIDES;    ATOMS;    BURNUP;    PROCESSING;    RADIATIONS;    RARE EARTHS;    REMOVAL;    TRANSMUTATION;    URANIUM MINERALS;    WASTES;   

DOI  :  10.2172/967181
RP-ID  :  DOE/ID/14644
PID  :  OSTI ID: 967181
Others  :  TRN: US1001100

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

With increased application of MOX fuels and longer burnup times for conventional fuels, higher concentrations of the transplutonium actinides Am and Cm (and even heavier species like Bk and Cf) will be produced. The half-lives of the Am isotopes are significantly longer than those of the most important long-lived, high specific activity lanthanides or the most common Cm, Bk and Cf isotopes, thus the greatest concern as regards long-term radiotoxicity. With the removal and transmutation of Am isotopes, radiation levels of high level wastes are reduced to near uranium mineral levels within less than 1000 years as opposed to the time-fram if they remain in the wastes.