Equilibrium and Kinetics of Lithium Extraction by a Mixture of LIX54 and TOPO.

Kinugasa, Takumi; Nishibara, Hideki; Murao, Yumiko; Kawamura, Yuko; Watanabe, Kunio; Takeuchi, Hiroshi

doi:10.1252/jcej.27.815

Cited by 28 publications

(10 citation statements)

References 6 publications

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“…The extracted species of lithium and sodium with the LIX 51–TOPO and LIX 54–TOPO systems were Li(A(TOPO) 1.3 ) and Na(A(TOPO) 1.3 ), respectively, where A represents the deprotonated LIX reagent . The extraction of lithium and its separation from sodium with the LIX 54–TOPO system were further studied by Kinugasa et al and LIX 54‐TOPO system considered as the best system . Among all reported extractants, LIX 51–TOPO and LIX 54–TOPO are the most effective extractant for extraction of lithium.…”

Section: Solvent Extraction Of Lithiummentioning

confidence: 99%

Separation and purification of lithium by solvent extraction and supported liquid membrane, analysis of their mechanism: a review

Swain

2016

J. Chem. Technol. Biotechnol.

189

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Separation and purification of lithium by solvent extraction and supported liquid membrane using various commercial and non-commercial extraction has been reviewed. In solvent extraction, extraction by chelating extractants, acidic extractants, solvation extractants and mechanism involved in the extraction has been discussed. Solvent extraction of lithium by solvation extractants like; TOPO, DBM, TBP, and LIX and synergism of diketone with various solvation extractant combinations have been reviewed. Finally, lithium extraction by supported liquid membrane using various extractants has been reviewed. The reported processes mainly lacking in analysis of chemical mechanism involved in the lithium extraction using all these extractants are analyzed and discussed.

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Section: Solvent Extraction Of Lithiummentioning

confidence: 99%

Separation and purification of lithium by solvent extraction and supported liquid membrane, analysis of their mechanism: a review

Swain

2016

J. Chem. Technol. Biotechnol.

189

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“…TOPO was exploited as a ligand, and Li ? was extracted in the forms of Li(LIX51)(TOPO) 1.3 and Li(LIX51)(TOPO) 1.3 with extractants of a-perflouroalkanoyl-m-dodecylacetophenone (LIX51) and -acetyl-m-dodecylacetophenone (LIX54), respectively [162,163]. Compared to solid TOPO, liquid trialkyl phosphine oxide (Cyanex 923) can be easily and evenly dispersed in various organic solutions.…”

Section: B-diketone System Materialsmentioning

confidence: 99%

Materials for lithium recovery from salt lake brine

et al. 2020

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Rapid developments in the electric industry have promoted an increasing demand for lithium resources. Lithium in salt lake brines has emerged as the main source for industrial lithium extraction, owing to its low cost and extensive reserves. The effective separation of Mg 2? and Li ? is critical to achieving high recovery efficiency and purity of the final lithium product. This paper summarizes Mg 2? /Li ? separation materials and methods in the field of lithium recovery from salt lake brines. The review begins with an introduction to the global distribution and demand for lithium resources, followed by a description of the materials used in various separation techniques, including precipitation, adsorption, solvent extraction, nanofiltration membrane, electrodialysis, and electrochemical methods. A comparison, analysis, and outlook of such methods are comprehensively discussed in terms of principles, mechanisms, synthesis/operation, development, and industrial applications. We conclude with a presentation of challenges and insights into the future directions of lithium extraction from salt lake brines. A combination of the advantages of various materials is the most logical step toward developing novel methods for extracting lithium from brines with high separation selectivity, stability, low cost, and environmentally friendly characteristics.

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“…Several authors have reported the extraction of Li(I) using a mixture of chelating and neutral extractants such as TBP and TOPO in kerosene [29,54,55]. Neither Li(I) nor Na(I) was extracted by LIX 54, TOPO and Cynanex 923, while some mixed systems consisting of LIX 54 and neutral extractants (TOPO and Cyanex 923) showed synergism for the selective extraction of Li(I) from Na(I) and K(I) in sulfate or chloride solutions [29,54,55]. The extraction efficiency of Li(I) by the mixture of LIX 54 and Cyanex 923 was higher than that by the mixture of LIX 54 and TOPO because the solubility of Cyanex 923 was higher in organic diluents than that of TOPO.…”

Section: Extractantsmentioning

confidence: 99%

A Review on the Separation of Lithium Ion from Leach Liquors of Primary and Secondary Resources by Solvent Extraction with Commercial Extractants

Nguyen

Lee

2018

Processes

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The growing demand for lithium necessitates the development of an efficient process to recover it from three kinds of solutions, namely brines as well as acid and alkaline leach liquors of primary and secondary resources. Therefore, the separation of lithium(I) from these solutions by solvent extraction was reviewed in this paper. Lithium ions in brines are concentrated by removing other metal salts by crystallization with solar evaporation. In the case of ores and secondary resources, roasting followed by acid/alkaline leaching is generally employed to dissolve the lithium. Since the compositions of brines, alkaline and acid solutions are different, different commercial extractants are employed to separate and recover lithium. The selective extraction of Li(I) over other metals from brines or alkaline solutions is accomplished using acidic extractants, their mixture with neutral extractants, and neutral extractants mixed with chelating extractants in the presence of ferric chloride (FeCl 3 ). Among these systems, tri-n-butyl phosphate (TBP)-methyl isobutyl ketone (MIBK)-FeCl 3 and tri-n-octyl phosphine oxide (TOPO)-benzoyltrifluoroacetone (HBTA) are considered to be promising for the selective extraction and recovery of Li(I) from brines and alkaline solutions. By contrast, in the acid leaching solutions of secondary resources, divalent and trivalent metal cations are selectively extracted by acidic extractants, leaving Li(I) in the raffinate. Therefore, bis-2,4,4-trimethyl pentyl phosphinic acid (Cyanex 272) and its mixtures are suggested for the extraction of metal ions other than Li(I).

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Equilibrium and Kinetics of Lithium Extraction by a Mixture of LIX54 and TOPO.

Cited by 28 publications

References 6 publications

Separation and purification of lithium by solvent extraction and supported liquid membrane, analysis of their mechanism: a review

Separation and purification of lithium by solvent extraction and supported liquid membrane, analysis of their mechanism: a review

Materials for lithium recovery from salt lake brine

A Review on the Separation of Lithium Ion from Leach Liquors of Primary and Secondary Resources by Solvent Extraction with Commercial Extractants

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