Capture of Pu(V), Np(V) and Pu(VI) from alkaline solutions by hydroxides of Pu(IV), Th(IV) and La(III)

被引：0
|
作者：
Budantseva, N
Bessonov, A
Tananaev, I
Fedosseev, A
Delegard, C
机构：
[1] Russian Acad Sci, Inst Phys Chem, Moscow 117915, Russia
[2] Pacific NW Lab, Richland, WA 99352 USA
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 271卷
关键词：
neptunium; plutonium; alkaline solution; capture;
D O I：
10.1016/S0925-8388(98)00060-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In systematic studies of actinide chemistry in alkaline solution, it was found that Pu(IV) hydrous oxide can remove significant amounts of plutonium present in higher oxidation states from solution. By spectrophotometry it was found that the capture of Pu(VI) by Pu(IV) hydrous oxide is negligible whereas Pu(V) and Np(V) are highly adsorbed. Quantitative characterization of the process was investigated by a radiometric method based on Np-239-labeled neptunium. The influence of temperature, all;ali concentration, and the Pu/Np molar ratio on the extent of capture of Np(V) by PuO(2)xH(2)O was investigated. (C) 1998 Elsevier Science S.A.
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页码：231 / 235
页数：5
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