Extraction of rubidium ion from brine solutions by dicyclohexano-18-crown-6 / ionic liquid system

• Autorzy: Huang Dongfang , Ma Guixiang , Lv Peng , Zhou Quanbao

Identyfikatory

DOI

10.2478/pjct-2023-0009

• Języki publikacji: EN

Abstrakty

EN

Separation among rubidium and potassium ions from salt lake brines remains challenging. In this work, a typical room temperature ionic liquid 1-ethyl-3-metyhlimidazaolium bis(trifluoromethylsulfonyl)imide ([C₂mim⁺][NTf₂^-]) was used as diluent and synergistic extractant, dicyclohexano-18-crown-6 (DCH18C6) was used as extractant to extract rubidium ions from brine solutions which contain high concentrations of potassium ions was investigated. Under the optimal conditions, the single extraction efficiency of rubidium ions was up 93.63%. The thermodynamic parameters of the rubidium ion extraction were obtained. Based on the slope analysis method, the extracted species in the organic phase were ascertained as 1:1 complex. UV-visible has been performed to investigate the ion concentration of ionic liquid before and after the interaction of metal ions and ligands. Rubidium ions in [Rb · DCH18C6]⁺ complex were stripped by 2.5 mol · L^-1 NH₄NO₃. The extraction system offers high efficiency, simplicity and environmentally friendly application prospect to separate rubidium from brine solutions.

Słowa kluczowe

EN

rubidium; ionic liquid; dicyclohexano-18-crown-6; solvent extraction

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2023
• Tom: Vol. 25, nr 1
• Strony: 61--68
• Opis fizyczny: Bibliogr. 27 poz., rys., tab., wz.

Twórcy

autor

Huang Dongfang

• Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, China
• School of water resources and environmental engineering, East China University of Technology, 330013, China

autor

Ma Guixiang

• School of Biology, Chemistry and Material Science, East China University of Technology, 330013, China

autor

Lv Peng

• School of water resources and environmental engineering, East China University of Technology, 330013, China

autor

Zhou Quanbao

• School of Biology, Chemistry and Material Science, East China University of Technology, 330013, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).