Studies on a new solid–liquid Cs separation using the ionic liquid extraction system in comparison with the conventional adsorption
- 6 Downloads
The process characteristics of a new solid–liquid Cs+ separation from the radioactive liquid waste using a crown ether dicyclohexano-18-crown-6 as an extractant and an ionic liquid of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide were studied. The physicochemical properties of the precipitate containing Cs+ which is an solid–liquid extraction product were investigated to identify the solid–liquid phase separability and Cs+ loading. The Cs+ separation process performances were compared experimentally with those of the conventional adsorption system for pretreatment requirement and the amount of Cs+ waste. It was observed that the solid–liquid separation method using ILs has high Cs+ separation performance especially in the low Cs+ concentration.
KeywordsCesium Ionic liquids Crown ether Liquid–liquid extraction Solid–liquid separation Adsorption
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 2014151030031).
- 2.Bartsch RA, Chun S, Dzyuba SV (2002) Ionic liquids as novel diluents for solvent extraction of metal salts by crown ethers. ChemInform 33:278Google Scholar
- 8.Vendilo AG, Djigailo DI, Smirnova SV, Torocheshnikova II, Popov KI, Krasovsky VG, Pletnev IV (2009) 18-Crown-6 and dibenzo-18-crown-6 assisted extraction of cesium from water into room temperature ionic liquids and its correlation with stability constants for cesium complexes. Molecules 14:5001–5016CrossRefGoogle Scholar
- 22.Lee HK, Choi JW, Oh WZ, Choi SJ (2016) Sorption of cesium ions from aqueous solutions by multi-walled carbon nanotubes functionalized with copper ferrocyanide. J Radioanal Nucl Chem 309:477–484Google Scholar