Extraction behavior of strontium from nitric acid medium with N,N'-dimethyl-N,N'-dioctyldiglcolamide

被引：14
|
作者：
Xu, Yingbo [1 ]
Gao, Yang [1 ]
Zhou, Yu [1 ]
Fan, Chenchen [1 ]
Hou, Hongguo [1 ]
Zhang, Meng [1 ]
机构：
[1] Harbin Engn Univ, Coll Nucl Sci & Technol, Fundamental Sci Nucl Safety & Simulat Technol Lab, Harbin, Heilongjiang, Peoples R China
来源：
SOLVENT EXTRACTION AND ION EXCHANGE | 2017年 / 35卷 / 07期
关键词：
DMDODGA; Sr2+; extraction; TEMPERATURE IONIC LIQUIDS; EURO-GANEX PROCESS; EARTH METAL-IONS; HIGH-LEVEL WASTE; SOLVENT-EXTRACTION; INTERACTION PARAMETERS; FISSION-PRODUCTS; TODGA; DIGLYCOLAMIDE; 25-DEGREES-C;
D O I：
10.1080/07366299.2017.1373997
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Strontium-90 (Sr-90), one of the most significant fission products carried into high-level waste (HLW), should preferably be separated from HLW. In this investigation, the extraction of Sr2+ was carried out using N,N'-dimethyl-N,N'-dioctyldiglcolamide (DMDODGA) in 40/60 (V/V)% 1-octanol/kerosene or ionic liquid (IL) [C(6)mim][Tf2N]. The composition of the extracted complex between DMDODGA and HNO3 depends on the aqueous HNO3 concentration. The distribution ratio of Sr2+ (D-Sr) is influenced by the initial concentration of HNO3 and strontium in the aqueous phase, the concentration of DMDODGA, and temperature. The stoichiometry of Sr2+ and DMDODGA in the extracted complex is 1:3. D-Sr in the IL is two orders of magnitude higher than that in 40/60 (V/V)% 1-octanol/kerosene at lower acidity.
引用
收藏
页码：507 / 518
页数：12
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