Immobilisation of actinides in phosphate matrices

被引：119
|
作者：
Dacheux, N [1 ]
Clavier, N
Robisson, AC
Terra, O
Audubert, F
Lartigue, JÉ
Guy, C
机构：
[1] Univ Paris 11, Inst Phys Nucl, Grp Radiochim, F-91406 Orsay, France
[2] CEN Cadarache, DEN, DED, SEP,LCC, F-13108 St Paul Les Durance, France
来源：
COMPTES RENDUS CHIMIE | 2004年 / 7卷 / 12期
关键词：
actinides immobilisation; ceramic matrices; phosphate; sintering; radwaste storage;
D O I：
10.1016/j.crci.2004.02.019
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In the field of the immobilisation of high-activity-level and long-life radwaste (HAVL) for a deep underground repository, several phosphate matrices were already proposed as good candidates to delay the release of actinides in the near-field of such disposal. Among them, thorium phosphate-diphosphate (TPD), monazites/brabantites, britholites, and TPD/monazite composites were extensively studied. The synthesis of samples doped with actinides (Th, U...) through wet and dry chemistry methods then their complete characterisation are reported. Their chemical durability is also examined. These materials appear as promising matrices to immobilise tetravalent and/or trivalent actinides. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.
引用
收藏
页码：1141 / 1152
页数：12
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