Journal of Radioanalytical and Nuclear Chemistry

, Volume 319, Issue 1, pp 387–392 | Cite as

Studies on a new solid–liquid Cs separation using the ionic liquid extraction system in comparison with the conventional adsorption

  • Seungyeon Cho
  • Jungweon Choi
  • Sang-June Choi
  • Wonzin OhEmail author


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.


Cesium 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).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.School of Architectural, Civil, Environmental, and Energy EngineeringKyungpook National UniversityDaeguRepublic of Korea
  2. 2.Research Institute of Advanced Energy TechnologyKyungpook National UniversityDaeguRepublic of Korea

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