建议从高放废物中除去放射性同位素137 Cs和90 Sr,这两种重要的裂变产物通常在乏核燃料后处理过程中带入高放废物(HLW)中,以减少高放废物的体积,然后使核能更加清洁和可持续的。多种分离技术,包括溶剂萃取,已经开发了用于除去137 Cs和90从HLW锶。在那些已开发的分离技术中,溶剂萃取更适用且有希望,特别是对于酸性高放废物。本文综述了近十年来从高放废物中分离锶和铯的溶剂萃取方法的科学进展和应用进展。
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Solvent Extraction of Strontium and Cesium: A Review of Recent Progress
Radioactive isotopes 137Cs and 90Sr, two significant fission products that are usually carried into High Level Waste (HLW) during spent nuclear fuel reprocessing are suggested to be removed from HLW in order to reduce the volume of HLW and then make nuclear energy more clean and sustainable. A variety of separation techniques, including solvent extraction, have been developed for the removal of 137Cs and 90Sr from HLW. Among those developed separation techniques, solvent extraction is more applicable and promising, particularly for acidic HLW. This article reviews the scientific progress as well as application developments of the solvent extraction method for the separation of strontium and cesium from HLW in the last decade.