Recovery of lithium from high Mg/Li ratio salt-lake brines using ion-exchange with NaNTf2 and TBP
文献类型：期刊论文
| 作者 | Bai, Ruibing1,2; Wang, Junfeng1; Wang, Daoguang1; Cui, Junjie1; Zhang, Yanqiang1 |
| 刊名 | Hydrometallurgy
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 213 |
| 关键词 | Chemical shift - Efficiency - Ion exchange - Ionic liquids - Mass spectrometry - Metal ions - Negative ions - Positive ions - Recovery - Red Shift - Solvent extraction |
| ISSN号 | 0304386X |
| DOI | 10.1016/j.hydromet.2022.105914 |
| 英文摘要 | In view of the complex problems for the ionic liquids (ILs) recovery with the system containing ILs and TBP, this work proposed a NaNTf2-based synergistic extraction system, NaNTf2 + TBP, which could realize the effective reutilization of the extraction system without reducing the lithium separation ability. Under the optimal extraction parameters, the extraction efficiency of Li+ exceeded 98%, while that of Mg2+ was only ~1%. The results of mass spectrometry (ESI-MS) and slope analysis showed that two TBP molecules involved in the extraction process of Li+, and the Li+ extraction mechanism obeyed the cation-exchange process. According to the red shift of the FT 鈭?IR peak of P[dbnd]O in TBP and the chemical shift changes of P in 31P NMR, the interaction strength between TBP and different metal ion followed the sequence: ETBP鈭扝 >> ETBP鈭扡i > ETBP鈭扢g > ETBP鈭扠 > ETBP鈭扤a. It was also found that after a three鈭抯tage countercurrent extraction process, [Li+]org was 0.42 g L鈭?, and the total recovery efficiency of Li+ was about 98%. The saturated extraction capacity for Li+ could be as high as 5.4 g L鈭?, and Li+ could be stripped with the aqueous solution containing 0.2 mol L-1 HCl. In addition, the extraction efficiency of Li+ was almost not attenuated after 6 extraction cycles. This new extraction system shows a certain industrial application prospect for Li+ separation from the salt lake bine with high Mg/Li ratio. 漏 2022 |
| 学科主题 | Lithium |
| 项目编号 | Sincerely appreciate Prof. Suojiang Zhang (IPE, CAS) for his careful academic guidance and great support. This work was supported by the National Natural Science Foundation of China ( U20A20149 , 21978302 ), Innovation Academy for Green Manufacture , Chinese Academy of Sciences ( IAGM2020DB05 ). |
| 出版者 | Elsevier B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61247]  |
| 作者单位 | 1.State Key Laboratory of Multiphase Complex Systems, Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.School of Chemical and Environmental Engineering (Key Lab of Ecological Restoration in Hilly Areas), Pingdingshan University, Pingdingshan; 467000, China |
| 推荐引用方式 GB/T 7714 | Bai, Ruibing,Wang, Junfeng,Wang, Daoguang,et al. Recovery of lithium from high Mg/Li ratio salt-lake brines using ion-exchange with NaNTf2 and TBP[J]. Hydrometallurgy,2022,213. |
| APA | Bai, Ruibing,Wang, Junfeng,Wang, Daoguang,Cui, Junjie,&Zhang, Yanqiang.(2022).Recovery of lithium from high Mg/Li ratio salt-lake brines using ion-exchange with NaNTf2 and TBP.Hydrometallurgy,213. |
| MLA | Bai, Ruibing,et al."Recovery of lithium from high Mg/Li ratio salt-lake brines using ion-exchange with NaNTf2 and TBP".Hydrometallurgy 213(2022). |
入库方式： OAI收割
来源：过程工程研究所
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