Development of a new flowsheet for partitioning of long-lived radionuclides from high-level wastes: the “CRAMEX” process

被引：0

作者：

Lyudmila Tkachenko

Ekaterina Kenf

Vasiliy Babain

Mikhail Alyapyshev

机构：

[1] Khlopin Radium Institute,Department of Applied Radiochemistry

[2] ITMO University,undefined

来源：

Journal of Radioanalytical and Nuclear Chemistry | 2022年 / 331卷

关键词：

TODGA; Crown ethers; PUREX process raffinate; Extraction; Cesium; Strontium; Actinides; Lanthanides; Polar fluorinated diluents;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A flowsheet for a novel CRAMEX (crown ether and amide for the extraction) process has been developed. The solvent system proposed is a combination of 0.3 M N,N,N′,N′-tetraoctyl diglycolamide (TODGA) and 0.2 M dibenzo-21-crown-7 (DB21C7) in polar fluorinated diluents that co-extracted cesium, strontium, actinides and lanthanides. The stripping of cesium and strontium from the loaded organic phase can be carried out with diluted nitric acid solutions (< 0.1 M HNO3). A mixture of 0.5 M methylamine carbonate and 10 g/l DTPA provides stripping of actinides and lanthanides.

引用

页码：4001 / 4010

页数：9

共 47 条

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