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化学进展  2011 

从高放废液中去除锕系元素的TRPO流程发展三十年

, PP. 1366-1371

Keywords: 高放废液,TRPO流程,锕系元素,分离

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Abstract:

放射性废物,尤其是高放废物的妥善处理处置是各国政府和民众非常重视的一个问题,也是影响核能可持续发展的关键因素之一。高放废液是后处理Purex流程排放出来的废液,它集中了乏燃料中95%以上的放射性,其中α放射性核素的存在决定了需要将其处置在地质处置库中与生物圈隔离10万年以上。“分离-嬗变”方法处理高放废液可以有效缩减地质处置库与生物圈隔离的时限。TRPO具有良好的物性、辐照稳定性和对三价、四价和六价锕系元素良好的萃取选择性。基于此,我国提出了从高放废液中分离锕系元素的TRPO流程。多次热验证实验和中间规模冷台架实验结果证明TRPO流程处理我国生产堆高放废液,可完全实现高放废液的非α化。TRPO流程具有我国自主知识产权,在我国生产堆高放废液和动力堆高放废液处理中都具有良好的应有前景。

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