<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Application of 1-butyl-3-metyhlimidazaolium hexafluorophosphate ([C4mim][PF<sub>6</sub>]), in the extraction of rubidium and cesium from brine solutions using 1,4,7,10,13,16-hexaoxacyclooctadecane (18C6) as extractant was investigated. Parameters that affect the extraction including pH of aqueous phase, equilibration time, dosage of the ionic liquid, phase ratio, concentration of 18C6 were studied. Under the optimal conditions, the single extraction efficiency of rubidium ions and cesium ions were up 84.11% and 94.99%, respectively. The stripping of alkali metal ions from the loaded organic phase with different stripping agents and concentrations were also investigated. The initial value of the K/Cs and K/Rb ratios were 93.0 and 104.3, respectively, which have dropped 91.21% and 88.01%, respectively, after the extraction and stripping experiments. It was taken a big step in the separation and enrichment of cesium (rubidium) ion and potassium ion. The extraction mechanism was revealed most likely to be a cation exchange mode in this system.</p></abstract>

Application of 1-butyl-3-metyhlimidazaolium hexafluorophosphate ([C4mim][PF6]), in the extraction of rubidium and cesium from brine solutions using 1,4,7,10,13,16-hexaoxacyclooctadecane (18C6) as extractant was investigated. Parameters that affect the extraction including pH of aqueous phase, equilibration time, dosage of the ionic liquid, phase ratio, concentration of 18C6 were studied. Under the optimal conditions, the single extraction efficiency of rubidium ions and cesium ions were up 84.11% and 94.99%, respectively. The stripping of alkali metal ions from the loaded organic phase with different stripping agents and concentrations were also investigated. The initial value of the K/Cs and K/Rb ratios were 93.0 and 104.3, respectively, which have dropped 91.21% and 88.01%, respectively, after the extraction and stripping experiments. It was taken a big step in the separation and enrichment of cesium (rubidium) ion and potassium ion. The extraction mechanism was revealed most likely to be a cation exchange mode in this system.

Extraction of rubidium and cesium from brine solutions using a room temperature ionic liquid system containing 18-crown-6

Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources

Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources

University of Chinese Academy of Sciences

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Application of 1-butyl-3-metyhlimidazaolium hexafluorophosphate ([C4mim][PF6]), in the extraction of rubidium and cesium from brine solutions using...

Extraction of rubidium and cesium from brine solutions using a room temperature ionic liquid system containing 18-crown-6

Published Online: Jul 25, 2018

Page range: 40 - 46

DOI: https://doi.org/10.2478/pjct-2018-0021

Keywords
Rubidium, Cesium, Ionic liquid, 18-crown-6, Solvent extraction

© 2018 Dongfang Huang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Extraction of rubidium and cesium from brine solutions using a room temperature ionic liquid system containing 18-crown-6

Published Online: Jul 25, 2018

Page range: 40 - 46

DOI: https://doi.org/10.2478/pjct-2018-0021

KeywordsRubidium, Cesium, Ionic liquid, 18-crown-6, Solvent extraction

© 2018 Dongfang Huang et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Rubidium, Cesium, Ionic liquid, 18-crown-6, Solvent extraction