The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system

Zhu, Wenbo; Jia, Yongzhong; Zhang, Quanyou; Sun, Jinhe; Jing, Yan; Li, Jie

doi:10.1016/j.molliq.2019.04.046

Cited by 29 publications

(14 citation statements)

References 24 publications

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“…In recent years, solvent extraction applications for metal ions that utilize ionic liquids (ILs) have been investigated extensively owing to their excellent properties such as adequate thermal stability, negligible volatility, and good radiation stability. , Zhu et al examined the effect on lithium extraction by systems containing crown ether, dichloromethane, and ionic liquids with the cations [EMIm] + , [BMIm] + , [HMIm] + , and [OMIm] + and anions [NTf 2 ] − and [CF 3 COO] − . Shi et al used room temperature ionic liquids such as [C 2 mim][NTf 2 ] and [C 4 mim][NTf 2 ] and functional ionic liquids such as tetrabutylammonium bis(2-ethylhexyl) phosphate esters ([N 4444 ][DEHP]) and tetrabutylphosphonium bis(2,4,4-trimethyl-pentyl) phosphonates ([P 4444 ][BTMPP]) to conduct in-depth studies on separating lithium and magnesium from lake brine.…”

Section: Introductionmentioning

confidence: 99%

Selective Extraction of Lithium from Spent Lithium Batteries by Functional Ionic Liquid

Zheng

Dong

Sha

et al. 2021

ACS Sustainable Chem. Eng.

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The recovery of valuable elements such as Li, Co, and Ni from spent lithiumion batteries is essential for environmental protection and energy conservation. However, the inadequate recovery efficiency of lithium by traditional methods hinders the development of this industry. Thus, a sustainable and efficient approach for the selective extraction of lithium from spent batteries by a carboxyl-functionalized ionic liquid (carboxymethyl trimethylammonium bis(trifluoromethyl)sulfonimide) to increase the recovery efficiency of lithium was designed and developed in this work. By appropriately adjusting and controlling the parameters including the pH value, extractant concentration, and phase ratio, the selective extraction of lithium was optimized with excellent selectivity and recovery efficiency. After optimization, the lithium extraction efficiency reached 96.8%. The slope method combined with FTIR spectroscopy was utilized to characterize the variations in the functional groups during extraction to reveal possible extraction mechanisms. The extraction of lithium ions from organic phases and the recycling of ionic liquids were subsequently investigated. This work proposes the concept of a green, recyclable extractant for selectively separating and recovering lithium from spent LIBs.

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Section: Introductionmentioning

confidence: 99%

Selective Extraction of Lithium from Spent Lithium Batteries by Functional Ionic Liquid

Zheng

Dong

Sha

et al. 2021

ACS Sustainable Chem. Eng.

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“…Selectivity Order Li + /Na Modifications of crown ether extractions include attaching crown ethers to carbon nanotubes, and combining crown ethers with ionic liquid extraction or supercritical fluid extraction (see below) [17,63,181,[185][186][187][188][189][190]. Several studies have investigated polymerized crown ethers for lithium extraction [191][192][193][194][195][196].…”

Section: Compoundmentioning

confidence: 99%

Technology for the Recovery of Lithium from Geothermal Brines

Stringfellow

Dobson

2021

Energies

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Lithium is the principal component of high-energy-density batteries and is a critical material necessary for the economy and security of the United States. Brines from geothermal power production have been identified as a potential domestic source of lithium; however, lithium-rich geothermal brines are characterized by complex chemistry, high salinity, and high temperatures, which pose unique challenges for economic lithium extraction. The purpose of this paper is to examine and analyze direct lithium extraction technology in the context of developing sustainable lithium production from geothermal brines. In this paper, we are focused on the challenges of applying direct lithium extraction technology to geothermal brines; however, applications to other brines (such as coproduced brines from oil wells) are considered. The most technologically advanced approach for direct lithium extraction from geothermal brines is adsorption of lithium using inorganic sorbents. Other separation processes include extraction using solvents, sorption on organic resin and polymer materials, chemical precipitation, and membrane-dependent processes. The Salton Sea geothermal field in California has been identified as the most significant lithium brine resource in the US and past and present efforts to extract lithium and other minerals from Salton Sea brines were evaluated. Extraction of lithium with inorganic molecular sieve ion-exchange sorbents appears to offer the most immediate pathway for the development of economic lithium extraction and recovery from Salton Sea brines. Other promising technologies are still in early development, but may one day offer a second generation of methods for direct, selective lithium extraction. Initial studies have demonstrated that lithium extraction and recovery from geothermal brines are technically feasible, but challenges still remain in developing an economically and environmentally sustainable process at scale.

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“…Zhu et al systematically discussed the synergistic effects between Li ? extraction efficiency and ionic liquid properties (e.g., the structure of cations and anions, unsaturated functional groups, and alkyl carbon chain lengths) using 16 ionic liquids [197].…”

Section: According To the Investigation Of LImentioning

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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The effect of ionic liquids as co-extractant with crown ether for the extraction of lithium in dichloromethane-water system

Cited by 29 publications

References 24 publications

Selective Extraction of Lithium from Spent Lithium Batteries by Functional Ionic Liquid

Selective Extraction of Lithium from Spent Lithium Batteries by Functional Ionic Liquid

Technology for the Recovery of Lithium from Geothermal Brines

Materials for lithium recovery from salt lake brine

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