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

Masmoudi, Abderrazak; Zante, Guillaume; Trébouet, Dominique; Barillon, Rémi; Boltoeva, Maria

doi:10.1080/07366299.2020.1788201

Cited by 19 publications

(6 citation statements)

References 33 publications

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“…For instance, with a TBP content of 95 wt % in the organic feed, only a 70% extraction efficiency of Li + was achieved. The findings are consistent with other IL/TBP extraction mixtures for Li + extraction from the literature. ,− …”

Section: Resultssupporting

confidence: 92%

Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Hubach,

Er,

Held

2024

J. Chem. Eng. Data

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The global need for rechargeable batteries has increased significantly, leading to a corresponding rise in demand for lithium. This study explores the use of tetracyanoborate-based ionic liquids (IL) and tributyl phosphate (TBP) for the liquid–liquid extraction of lithium ions (Li+) from aqueous sources. The investigation includes comprehensive experimental analyses and modeling with the electrolyte perturbed-chain statistical associating fluid theory (ePC-SAFT). The Experimental Section investigates the process conditions for the extraction efficiency of the extraction system. It includes investigations into the best TBP/IL ratio of the TBP/IL extraction agent mixture and the influence of the phase ratio (mass of IL + TBP/mass of the aqueous salt solution) on extraction efficiency. The results proved the synergetic effects of the two extraction agents, IL and TBP, providing maximum efficiency at TBP/IL = 0.85. Li+ was almost completely extracted from an aqueous LiCl solution using optimized conditions. The ePC-SAFT modeling approach accounted for the ion-pair-assisted extraction of Li+ into the organic phase, enabling the description of the experimental behavior as quantitatively correct. This provided deeper understanding of the thermodynamic behavior within the liquid–liquid extraction system and paves the way for the screening of numerous IL systems for Li+ extraction and the prediction of optimal process conditions in the future.

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Section: Resultssupporting

confidence: 92%

Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Hubach,

Er,

Held

2024

J. Chem. Eng. Data

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“…). The anion ( ) is responsible for extracting the metals from an aqueous solution, displacing chloride ions from lithium [37]. Additionally, the neutral donor is distributed between organic and the aqueous phases given by the distribution constant ( , ).…”

Section: Predictive Methods For Selectivity Calculationmentioning

confidence: 99%

Ionic Liquids for the Selective Solvent Extraction of Lithium from Aqueous Solutions: A Theoretical Selection Using COSMO-RS

et al. 2022

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In this study, the theoretical design of ionic liquids (ILs) for predicting selective extraction of lithium from brines has been conducted using COSMO-RS. A theoretical model for the solvent extraction (SX) of the metal species present in brines was established considering extraction stoichiometry, the distribution of the extractants between aqueous and IL phases, and IL dissociation in the aqueous phase. Theoretical results were validated using experimental extraction percentages from previous works. Results indicate that, in general, the theoretical results for lithium extraction follow experimental trends, except from magnesium extraction. Finally, based on the model, an IL was proposed that was based on the phosphonium cation as the extractant, along with the phase modifier tributylphosphate (TBP) in an organic diluent in order to improve selectivity for lithium extraction over sodium. These results provide an insight for the application of ILs in lithium processing, avoiding the long purification times reported in the conventional process.

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“…The high cost of these solvents also suggests that ionic liquids are better suited to small volume applications for extraction of high value metals [185]. However, the prospect of concentrating metals from large volumes of dilute aqueous solution into small volumes of ionic liquids is promising and interest in lithium extraction using these materials is an active area of research [63,183,185,222].…”

Section: Ionic Liquidsmentioning

confidence: 99%

Technology for the Recovery of Lithium from Geothermal Brines

2021

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

Cited by 19 publications

References 33 publications

Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Ionic Liquids for the Selective Solvent Extraction of Lithium from Aqueous Solutions: A Theoretical Selection Using COSMO-RS

Technology for the Recovery of Lithium from Geothermal Brines

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

Cited by 19 publications

References 33 publications

Li+ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Li+ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Ionic Liquids for the Selective Solvent Extraction of Lithium from Aqueous Solutions: A Theoretical Selection Using COSMO-RS

Technology for the Recovery of Lithium from Geothermal Brines

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Product

Resources

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Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling

Li⁺ Extraction from Aqueous Medium Using Tetracyanoborate Ionic Liquids─Experiments and ePC-SAFT Modeling