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

• Autorzy: Huang D. , Zheng H. , Liu Z. , Bao A. , Li B.

Identyfikatory

DOI

10.2478/pjct-2018-0021

• Języki publikacji: EN

Abstrakty

EN

Application of 1-butyl-3-metyhlimidazaolium hexafl uorophosphate ([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 effi ciency 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.

Słowa kluczowe

EN

Rubidium; Cesium; Ionic liquid; 18-crown-6; Solvent extraction

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2018
• Tom: Vol. 20, nr 2
• Strony: 40--46
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Huang D.

• Chinese Academy of Sciences, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, 810008 Xining, China
• Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, 810008 Xining, China
• University of Chinese Academy of Sciences, 100049 Beijing, China

autor

Zheng H.

• Department of Chemistry, Chongqing Normal University, Chongqing, 400047, China

autor

Liu Z.

• Chinese Academy of Sciences, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, 810008 Xining, China
• Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, 810008 Xining, China
• University of Chinese Academy of Sciences, 100049 Beijing, China

autor

Bao A.

• Chinese Academy of Sciences, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, 810008 Xining, China
• Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, 810008 Xining, China
• University of Chinese Academy of Sciences, 100049 Beijing, China

autor

Li B.

• Chinese Academy of Sciences, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, 810008 Xining, China
• Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources, 810008 Xining, China

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).