Sorption behavior and speciation of AmIII in orthophosphates of rare-earth elements

被引：5
作者：
Romanchuk, Anna Yu. [1 ]
Gracheva, Nadezhda N. [1 ]
Bryukhanova, Kseniya I. [2 ]
Seregina, Irina F. [1 ]
Trigub, Alexander L. [3 ]
Gavrichev, Konstantin S. [2 ]
Kalmykov, Stepan N. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[2] Russian Acad Sci, NS Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia
[3] Natl Res Ctr, Kurchatov Inst, Moscow 123098, Russia
来源：
MENDELEEV COMMUNICATIONS | 2018年 / 28卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
SOLUBILITY; MONAZITE;
D O I：
10.1016/j.mencom.2018.05.025
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
It has been found that leaching of Am-III from the surface after the sorption is characterized by slow kinetics; over 10 days are required to reach a dynamic equilibrium in the system. The leaching process is accompanied by the formation of Am-containing phosphate phase on the sorbent surface. Annealing the sample at 400 degrees C for 5 h after sorption results in incorporation of the sorbed cation into the sorbent structure, which allows subsequent leaching to be reduced considerably.
引用
收藏
页码：303 / 305
页数：3
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