Extracting Lithium from the High Concentration Ratio of Magnesium and Lithium Brine Using Imidazolium-Based Ionic Liquids with Varying Alkyl Chain Lengths

Gao, Daolin; Guo, Yafei; Yu, Xiaoping; Wang, Shiqiang; Deng, Tianlong

doi:10.1252/jcej.15we046

Cited by 40 publications

(16 citation statements)

References 10 publications

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“…D. Gao et al [16,17] have investigated a similar system containing imidazolium based ionic liquids, tri-isobutyl phosphate (TIBP) and kerosene. In the first study, a neutral extraction mechanism was proposed, while a cation exchange was proposed in the second one, where the effect of increasing the alkyl chain of the IL cation was investigated.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Mechanism of Lithium Ion Extraction Using Tributyl Phosphate in Room Temperature Ionic Liquid

Masmoudi

Zante

Trébouet

et al. 2020

Solvent Extraction and Ion Exchange

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This paper reports the liquid-liquid extraction behavior of lithium ions from aqueous solutions containing hydrochloric acid using a well-known neutral extractant tri-n-butyl phosphate (TBP) and commonly used imidazolium-based ionic liquids (IL). The effect of several experimental parameters on the lithium partitioning was examined, in particular the nature of counter anions, the concentration of TBP, the pH of the aqueous solutions and the initial lithium ion concentration. The lithium extraction was also investigated with a conventional organic solvent 1-octanol to understand the role of the IL in the extraction process. Our results suggest that lithium partition into TBP/IL system proceeds via two mechanisms, namely by cationic exchange and ion pair transfer. The corresponding extraction equilibrium constants as well as stoichiometry of extracted complexes were determined. To overcome the loss of ionic liquid by cation exchange, we have shown that TBP mixed with an ionic liquid possessing low solubility in aqueous phases can extract lithium when a highly hydrophobic counter-ion such as (Tf N ) is present in the aqueous phase.

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Section: Introductionmentioning

confidence: 99%

Understanding the Mechanism of Lithium Ion Extraction Using Tributyl Phosphate in Room Temperature Ionic Liquid

Masmoudi

Zante

Trébouet

et al. 2020

Solvent Extraction and Ion Exchange

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“…Under optimal extraction conditions, the one-stage efficiency of lithium ion extraction was 83.71% and the one-stage distillation efficiency was 85.61% at 1.0 mol L −1 HCl in 1.0 mol L −1 NaCl as a stripping agent at (O/A) = 2 [82]. Also, lithium extraction from brine is performed using imidazolium-containing ionic liquids with varying alkyl chain lengths in a series of ionic liquids based on 1-alkyl-3-methylimidazolium (ILs), in which the alkyl chain lengths are 4-butyl (C 4 ), 5-pentyl (C 5 ), 6-hexyl (C 6 ), 7-heptyl (C 7 ), 8-octyl (C 8 ) or 9-nonyl (C 9 ), in the presence of tri-isobutyl phosphate (TIBP) and kerosene systems presented by Gao et al [83]. Studies have shown that the shorter the alkyl chain length of imidazolibased ILs, the higher the lithium recovery efficiency.…”

Section: Liquid-liquid Extraction Using Ionic Liquid Methods To Extracmentioning

confidence: 99%

“…With a single contact of extraction and distillation, the efficiency of lithium extraction under optimal conditions was 74.14 and 86.37%, respectively. And the optimal condition was ionic liquids based on N-butyl-3-methylimidazole: TIBP: kerosene = 1:8:1 (vol/vol), pH = 5.0, O/A = 2.0 at the extraction stage using 1 mol L −1 HCl at O/A = 3 at the distillation stage [83]. Separation of lithium and magnesium from Salt lake brine by liquidliquid extraction using ILs containing tributyl phosphate, reported Chenglong et al [84,85].…”

Section: Liquid-liquid Extraction Using Ionic Liquid Methods To Extracmentioning

confidence: 99%

Lithium Recovery from Brines Including Seawater, Salt Lake Brine, Underground Water and Geothermal Water

Samadiy¹,

Yu²,

Li³

et al. 2020

Thermodynamics and Energy Engineering

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Demand to lithium rising swiftly as increasing due to its diverse applications such as rechargeable batteries, light aircraft alloys, air purification, medicine and nuclear fusion. Lithium demand is expected to triple by 2025 through the use of batteries, particularly electric vehicles. The lithium market is expected to grow from 184,000 TPA of lithium carbonate to 534,000 TPA by 2025. To ensure the growing consumption of lithium, it is necessary to increase the production of lithium from different resources. Natural lithium resources mainly associate within granite pegmatite type deposit (spodumene and petalite ores), salt lake brines, seawater and geothermal water. Among them, the reserves of lithium resource in salt lake brine, seawater and geothermal water are in 70-80% of the total, which are excellent raw materials for lithium extraction. Compared with the minerals, the extraction of lithium from water resources is promising because this aqueous lithium recovery is more abundant, more environmentally friendly and cost-effective.

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“…. They further discovered that the length of the alkyl chains of 1-alkyl-3-methylimidazolium can affect the extraction efficiency of the TIBP/kerosene extraction systems [190]. Among several lengths from n-butyl (C 4 ) to n-nonyl (C 9 ), shorter alkyl chain lengths were associated with improved extraction performance.…”

Section: Ion Liquid 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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Extracting Lithium from the High Concentration Ratio of Magnesium and Lithium Brine Using Imidazolium-Based Ionic Liquids with Varying Alkyl Chain Lengths

Cited by 40 publications

References 10 publications

Understanding the Mechanism of Lithium Ion Extraction Using Tributyl Phosphate in Room Temperature Ionic Liquid

Understanding the Mechanism of Lithium Ion Extraction Using Tributyl Phosphate in Room Temperature Ionic Liquid

Lithium Recovery from Brines Including Seawater, Salt Lake Brine, Underground Water and Geothermal Water

Materials for lithium recovery from salt lake brine

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