【作者】 刘栎锟； 张虎； 何喜红； 叶国安；

【Author】 LIU Yue-kun;ZHANG Hu;HE Xi-hong;YE Guo’an;China Institute of Atomic Energy;

【机构】 中国原子能科学研究院放射化学研究所；

【摘要】 乏燃料具有长期的辐照危害,其安全处理处置是制约核能可持续发展的关键因素之一。分离—嬗变是处理乏燃料的一种方案,其思路是分离出乏燃料中长寿命核素,并将其嬗变为短寿命或者稳定核素。该方法可从根本上缩短乏燃料的长期辐照危害,而分离是嬗变的前提。在分离环节中,三价锕系和三价镧系的分离是该环节的一个难题,本文重点论述了BTP类萃取剂在三价锕系镧系元素分离中的研究进展,对比了各种萃取剂萃取性能、稳定性能和溶解性能,为萃取分离三价锕系和镧系元素提供参考。更多还原

【Abstract】 Spent fuel is highly radioactive and thermally hot,which remains so for decades.The treatments and disposal strategies have been regarded as a crucial issue for the sustainable development of nuclear fission energy.Partitioning of long-lived fission product nuclides and their subsequent transmutation(P&T strategy) to short-lived or stable nuclides is an attractive option to reduce the long-term surveillance and the hazard.The separation of trivalent transplutonium actinides and lanthanide ions from fission product represents arguably the most challenging aspect of advanced nuclear fuel partitioning schemes.In this report,the prior literature is examined to help provide guidance for potential deployment of the separation of Actinides and Lanthanides.Research progress on the BTP extractants are covered,the separation abilities and stabilities under various conditions are compared.更多还原