Study of Cs extraction in an ionic liquid system using a common anion in both aqueous and ionic liquid phases

  • Jung-Weon Choi
  • Hayeon Ryu
  • Wonzin Oh
  • Sang-June ChoiEmail author


The effect of Tf2N, as a common anion in aqueous and ionic liquid (IL) phases, on Cs extraction in the IL system was investigated using C2mimTf2N as an IL and DCH18C6 as an extractant. The “common anion (Tf2N) effect” operated via the movement of Cs+·Tf2N from the aqueous phase into the IL phase by extraction in the form of Cs+·extractant·Tf2N, without any traditional cation exchange. The extraction product was recovered as a precipitate using a small amount of IL, which facilitated precipitation via supersaturation.


Extraction Common anion effect Radioactive liquid waste Ionic liquids Cesium Precipitate 



This research was supported by the Nuclear Energy Development Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT (2018M2B2B1065631).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Jung-Weon Choi
    • 1
  • Hayeon Ryu
    • 1
  • Wonzin Oh
    • 2
  • Sang-June Choi
    • 1
    • 2
    Email author
  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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