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| Grouping separation of mixed rare earths from their coexisting aqueous solutions by liquid-column elution | |
| Cao, Wenjuan1,2; Huang, Kun3; Wang, Xiaoqin1,2; Liu, Huizhou1 | |
| 2019-08-01 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 27Issue:8Pages:1828-1836 |
| Abstract | A new approach was proposed for grouping separation of 14 lanthanide rare-earth ions from their coexisting mixed aqueous solutions, by performing liquid-column elution using the aqueous solution containing 14 lanthanide rare-earth ions as the stationary phase and the dispersed organic oil droplets containing P507 extractant as the mobile phase. It was revealed that 14 lanthanide rare-earth ions could be separated into four groups, according to the lanthanide tetrad effect, respectively eluting out from the liquid column at different time in a certain order. Various effects including the saponification degree of P507, the concentration of P507 in organic phase, the length and inner diameter of the extraction column on the performance of grouping separation of rare-earth ions were discussed. The changes of the mass transfer coefficients were also investigated. The separation efficiency of the four groups of rare-earth elements (REEs) was evaluated based on the elution resolution, Rs, of the elution peaks of La(III), Gd(III), Ho(III) and Lu(III), the four representative elements respectively from each of the four groups of REEs. Experimental results demonstrated that the separation of REEs by liquid-column elution mainly depended on the competitive adsorption of different rare-earth groups onto the surface of ascending P507 oil droplets. The affinity of different rare-earth groups with P507 extractant and a limited adsorption capacity of P507 molecules at the surface of the oil droplets ascending in liquid column play the important role. The present work highlights a promising technique for grouping separation of multiple lanthanide elements co-existing complex systems. (C) 2019 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved. |
| Keyword | Elution Lanthanide tetrad effect Rare-earths Group separation |
| DOI | 10.1016/j.cjche.2019.01.009 |
| Language | 英语 |
| WOS Keyword | MICROFLUIDIC SOLVENT-EXTRACTION ; CHROMATOGRAPHIC-SEPARATION ; ADSORPTION ; ELEMENTS ; ESTER ; ACID ; LANTHANIDES ; MEMBRANE ; KINETICS ; YTTRIUM |
| Funding Project | National Natural Science Foundation of China[51574213] ; National Natural Science Foundation of China[51074150] ; Key Project of Chinese National Programs for Fundamental Research and Development[2012CBA01203] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; Key Project of Chinese National Programs for Fundamental Research and Development |
| WOS ID | WOS:000496717900009 |
| Publisher | CHEMICAL INDUSTRY PRESS CO LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/39020 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Huang, Kun |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Cao, Wenjuan,Huang, Kun,Wang, Xiaoqin,et al. Grouping separation of mixed rare earths from their coexisting aqueous solutions by liquid-column elution[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2019,27(8):1828-1836. |
| APA | Cao, Wenjuan,Huang, Kun,Wang, Xiaoqin,&Liu, Huizhou.(2019).Grouping separation of mixed rare earths from their coexisting aqueous solutions by liquid-column elution.CHINESE JOURNAL OF CHEMICAL ENGINEERING,27(8),1828-1836. |
| MLA | Cao, Wenjuan,et al."Grouping separation of mixed rare earths from their coexisting aqueous solutions by liquid-column elution".CHINESE JOURNAL OF CHEMICAL ENGINEERING 27.8(2019):1828-1836. |
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