TALSPEAK Solvent Degradation

Martin, Leigh R. ; Mincher, Bruce J.

Idaho National Laboratory

关键词: Nuclear Fuel;    Radiolysis;    Trivalent Actinides;    Actinides;    Rare Earths;   

DOI  :  10.2172/971366
RP-ID  :  INL/EXT-09-16893
RP-ID  :  DE-AC07-05ID14517
RP-ID  :  971366

美国|英语

来源: UNT Digital Library

【 摘 要 】

Understanding the radiolytic degradation behavior of organic molecules involved in new or existing schemes for the recycle of used nuclear fuels is of significant interest for sustaining a closed nuclear fuel cycle. Here we have conducted several lines of investigation to begin understanding the effects of radiolysis on the aqueous phase of the TALSPEAK process for the separation of the trivalent lanthanides from the trivalent actinides. Using the 60-Co irradiator at the INL, we have begun to quantify the effects of radiation on the aqueous phase complexants used in this separation technique, and how this will affect the actinide lanthanide separation factor. In addition we have started to develop methodologies for stable product identification, a key element in determining the degradation pathways. We have also introduced a methodology to investigate the effects of alpha radiolysis that has previously received limited attention.