A novel method for separating Cs+ from liquid radioactive waste using ionic liquids and a selective extractant

作者：Kwon Sumin; Choi Jungweon; Cho Seungyeon; Lee Hyunkyu; Oh Wonzin; Choi Sang June^*

来源：Journal of Radioanalytical and Nuclear Chemistry, 2017, 311(3): 1605-1611.

DOI：10.1007/s10967-016-5112-y

• Cesium
• Ionic liquids
• Liquid-liquid extraction
• Solid-liquid extraction
• Extractant
• Precipitation

Selective separation of Cs+ from liquid radioactive waste by "precipitation" was observed in a hydrophobic ionic liquid containing the Cs+-selective extractant dicyclohexano-18-crown-6. The precipitate was formed by the cation exchange mechanism, which simplified the treatment of Cs+ after extraction. Solid-liquid extraction is a more economical extraction system than liquid-liquid extraction because it uses smaller quantities of ionic liquids. This work showed the possibility of developing a new method for removing Cs+ from liquid radioactive waste using solid-liquid phase separation instead of the conventional liquid-liquid separation in an ionic liquid extraction system.

• 出版日期2017-3