Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium
Solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium. A solution containing a high K<sup>+</sup> concentration (exceeding 80 g/L), which was ultra-salty, with about 200 g/L alkali metal...
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MDPI AG
2023-01-01
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| Loạt: | Separations |
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| Truy cập trực tuyến: | https://www.mdpi.com/2297-8739/10/1/42 |
| _version_ | 1827621978258800640 |
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| author | Junjie Xie Kang Li Zhuonan Shi Changli Min Shina Li Zichen Yin Ruixin Ma |
| author_facet | Junjie Xie Kang Li Zhuonan Shi Changli Min Shina Li Zichen Yin Ruixin Ma |
| author_sort | Junjie Xie |
| collection | DOAJ |
| description | Solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium. A solution containing a high K<sup>+</sup> concentration (exceeding 80 g/L), which was ultra-salty, with about 200 g/L alkali metal ions, was used to extract Rb<sup>+</sup> and Cs<sup>+</sup>. The effects of the process parameters on the separation of cesium and rubidium were systematically studied. The optimum conditions were as follows: NaOH concentration of 0.5 mol/L, t-BAMBP concentration of 1 mol/L (in sulfonated kerosene), organic/aqueous volume ratio (O/A ratio) of 3:1, and contact time of 1 min. The extraction rates of cesium and rubidium were 99.81 and 98.09%, respectively, and 19.31% of potassium was co-extracted in the organic phase after five-stage countercurrent extraction. About 99.32% of K<sup>+</sup> in the organic phase could be removed after five-stage countercurrent scrubbing with deionized water at an O/A ratio of 2:1 for 2 min. When 0.5 mol/L hydrochloric acid solution was used as detergent, almost all of the cesium and rubidium (>99%) could be recovered by two-stage countercurrent stripping at an O/A ratio of 3:1 for 2 min. A solid compound was found and collected from the organic phase during multi-stage solvent extraction. Its composition and structure were determined by XRD, infrared Fourier-transform, and ICP-MS. |
| first_indexed | 2024-03-09T11:14:48Z |
| format | Article |
| id | doaj.art-473b7cc8518e4dc6841fab76ff65bdd2 |
| institution | Directory Open Access Journal |
| issn | 2297-8739 |
| language | English |
| last_indexed | 2024-03-09T11:14:48Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Separations |
| spelling | doaj.art-473b7cc8518e4dc6841fab76ff65bdd22023-12-01T00:32:40ZengMDPI AGSeparations2297-87392023-01-011014210.3390/separations10010042Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and SodiumJunjie Xie0Kang Li1Zhuonan Shi2Changli Min3Shina Li4Zichen Yin5Ruixin Ma6School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaTianjin Research Institute of Water Transport Engineering, Ministry of Transport, Tianjin 30000, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSolvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium. A solution containing a high K<sup>+</sup> concentration (exceeding 80 g/L), which was ultra-salty, with about 200 g/L alkali metal ions, was used to extract Rb<sup>+</sup> and Cs<sup>+</sup>. The effects of the process parameters on the separation of cesium and rubidium were systematically studied. The optimum conditions were as follows: NaOH concentration of 0.5 mol/L, t-BAMBP concentration of 1 mol/L (in sulfonated kerosene), organic/aqueous volume ratio (O/A ratio) of 3:1, and contact time of 1 min. The extraction rates of cesium and rubidium were 99.81 and 98.09%, respectively, and 19.31% of potassium was co-extracted in the organic phase after five-stage countercurrent extraction. About 99.32% of K<sup>+</sup> in the organic phase could be removed after five-stage countercurrent scrubbing with deionized water at an O/A ratio of 2:1 for 2 min. When 0.5 mol/L hydrochloric acid solution was used as detergent, almost all of the cesium and rubidium (>99%) could be recovered by two-stage countercurrent stripping at an O/A ratio of 3:1 for 2 min. A solid compound was found and collected from the organic phase during multi-stage solvent extraction. Its composition and structure were determined by XRD, infrared Fourier-transform, and ICP-MS.https://www.mdpi.com/2297-8739/10/1/42t-BAMBPrubidiumcesiumpotassiumextraction complex |
| spellingShingle | Junjie Xie Kang Li Zhuonan Shi Changli Min Shina Li Zichen Yin Ruixin Ma Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium Separations t-BAMBP rubidium cesium potassium extraction complex |
| title | Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium |
| title_full | Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium |
| title_fullStr | Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium |
| title_full_unstemmed | Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium |
| title_short | Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium |
| title_sort | separation of cesium and rubidium from solution with high concentrations of potassium and sodium |
| topic | t-BAMBP rubidium cesium potassium extraction complex |
| url | https://www.mdpi.com/2297-8739/10/1/42 |
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