Sorption of Radionuclides 137Cs, 60Co, and 85Sr from Aqueous Solutions with Heat Treated Oil Shale

被引：0
|
作者：
Koren'kova, O. B. [1 ]
Radkevich, A., V [1 ]
Toropova, V. V. [1 ]
Saskovets, V. V. [1 ]
Shchebletsova, A. N. [1 ]
Kuznetsova, T. F. [2 ]
Ivanets, A. I. [2 ]
机构：
[1] Natl Acad Sci Belarus, Joint Inst Power & Nucl Res Sosny, Prilesye 223063, Minsk Oblast, BELARUS
[2] Natl Acad Sci Belarus, Inst Gen & Inorgan Chem, Minsk 220072, BELARUS
来源：
RADIOCHEMISTRY | 2021年 / 63卷 / 05期
关键词：
liquid radioactive waste; oil shale; sorption; selectivity; radionuclides; cesium; strontium; cobalt; RADIOACTIVE STRONTIUM; REMOVAL; BEHAVIOR; SR2+;
D O I：
10.1134/S1066362221050088
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The products of oil shale processing are of interest as sorbents for the purification of liquid radioactive waste (LRW). The work studies the adsorption and textural characteristics of samples of heat-treated oil shale by the method of low-temperature adsorption-desorption of nitrogen and sorption of radionuclides from aqueous solutions. It is shown that with an increase in the processing temperature of oil shale, their sorption capacity increases during the extraction of Cs-137 and Co-60 radionuclides from aqueous solutions, while the processing temperature does not affect the sorption of Sr-85. This effect of the treatment temperature on the oil shale sorption parameters is associated with the removal and carbonization of the organic constituent, as well as the different contribution of ion exchange and adsorption processes to the adsorption of Cs-137, Co-60, and Sr-85 radionuclides. Therewith the distribution coefficients of radionuclides reaches 10(3)-10(4) cm(3)/g.
引用
收藏
页码：606 / 612
页数：7
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