Selective recovery of lithium from simulated brine using different organic synergist

Huifang Li; Lijuan Li; Xiaowu Peng; Lianmin Ji; Wu Li

doi:10.1016/j.cjche.2018.04.010

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Selective recovery of lithium from simulated brine using different organic synergist

Separation Science and Engineering | Updated：2026-01-06

- Selective recovery of lithium from simulated brine using different organic synergist
- Chinese Journal of Chemical Engineering Vol. 27, Issue 2, Pages: 335-340(2019)
- Affiliations：
  
  1. 2 Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining,China,810008
  2. 3 University of Chinese Academy of Sciences,Beijing,China,100049
  3. 4 Qinghai University,Xining,China,810010
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.04.010
  CLC：
- Published：2019
- Accepted：
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Huifang Li, Lijuan Li, Xiaowu Peng, Lianmin Ji, Wu Li. Selective recovery of lithium from simulated brine using different organic synergist[J]. Chin.J.Chem.Eng., 2019, 27(2): 335-340.
DOI：

Huifang Li, Lijuan Li, Xiaowu Peng, Lianmin Ji, Wu Li. Selective recovery of lithium from simulated brine using different organic synergist[J]. Chin.J.Chem.Eng., 2019, 27(2): 335-340. DOI： 10.1016/j.cjche.2018.04.010.

摘要

Abstract

The organic synergists

including Octanol

ethyl acetate (EA)

butyl acetate (BA)

methyl isobutyl ketone (MIBK)

diisobutyl ketone (DIBK)

N-bis(2-ethylhexyl) acetamide (N523) and 8-hydroxylquiolate

were added to the TBP-FeCl

extraction system to extract lithium from brine. The effects of concentration of organic synergist and total organic extractant

molar ratio of Fe/Li

phase ratio

counter-current extraction and the acidity of stripping agent on lithium extraction were investigated to optimize the extraction conditions. Under the optimize conditions

the results of counter-current extraction showed the mixed extraction system was the preponderance on the lithium extraction. Especially the separation of lithium in organic phase and aqueous phase and the separation mass ratio of Mg/Li increased greatly. An extraction mechanism was proposed based on the analysis of FT-IR spectra and Raman spectra.

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