Recovery of lithium from alkaline brine by solvent extraction with β-diketone

Zhang, Licheng; Li, Lijuan; Shi, Dong; Peng, Xiaowu; Song, Fengrui; Feng, Nan; Han, Wensheng

doi:10.1016/j.hydromet.2017.10.029

Cited by 106 publications

(37 citation statements)

References 19 publications

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“…No extraction of lithium is obtained when using TOPO alone, evidencing the synergistic effect obtained when using both molecules combined in the organic phase. D Li reaches a maximum for HFDOD:TOPO=2:1 which was also found to be the optimal ratio for other synergistic systems based on β-diketones [37], [22]. For others ratios, D Li is found to be lower, even if the extraction is significant as compared to the distribution ratio obatained with both molecules used independently.…”

Section: <Htta≈hbta<hfdodmentioning

confidence: 77%

“…interest for this purpose [20], [21], [22]. In this last one, , the acidic extractant exchanges its labile proton with the lithium ion under ammoniacal conditions in the aqueous phase.…”

Section: Synergistic Systems Based On An Association Of Acidic and Nementioning

confidence: 99%

“…In this study, we used tri-octyl phosphine oxide (TOPO) as a synergistic agent because it has been demonstrated the highest synergistic effect for lithium [23]. Several acidic extracting molecules can be used, such as di-(2-ethylhexyl)phosphoric acid ([17], [24], [25]) or α-acetyl-m-dodecyl acetophenone ( [26], [27]) and other β-diketones ( [28], [21], [29]). In the present study, we compared several commercial acidic extractants ( Figure 1), namely di-(2-ethylhexyl)phosphoric acid (DEHPA), benzoyltrifluoroacetone (HBTA), thenoylfluoroacetone (HTTA), bis(trimethylpentyl)phosphonic acid (HBTMPP) and heptafluoro-dimethyl octanedione (HFDOD), and applied the most efficient in a supported liquid membrane.…”

Section: Synergistic Systems Based On An Association Of Acidic and Nementioning

confidence: 99%

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Highly selective transport of lithium across a supported liquid membrane

Zante

Boltoeva

Masmoudi

et al. 2020

Journal of Fluorine Chemistry

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Lithium extraction is a major concern in view of the increase in battery manufacturing. Separation of lithium from sodium is still challenging due to the similar chemical behavior of the two alkali metals. Sources such as brines or seawater usually contain large amounts of sodium which requires a high selectivity for the lithium extraction process. In this study, we demonstrate the application of a supported liquid membrane (SLM) with very high selectivity for the separation of lithium from sodium. A synergistic system made of heptafluorodimethyloctanedione (HFDOD) and tri-octyl phosphine oxide (TOPO) was selected based on its extraction efficiency (>99% of lithium extracted) and selectivity for lithium over sodium (separation factor≈400). Several parameters were studied using a SLM made of HFDOD and TOPO (lithium concentration, sodium to lithium ratio, HFDOD: TOPO ratio). It was found that high lithium permeation rates can be obtained even for low lithium concentrations and high 2 sodium concentration. Membrane stability was evaluated and was found to be poor (loss of performances after one cycle of use), due to the leakage of the organic phase and change in HFDOD: TOPO ratio. This SLM system is suitable for the extraction of lithium from brines and seawater.

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Section: <Htta≈hbta<hfdodmentioning

confidence: 77%

“…interest for this purpose [20], [21], [22]. In this last one, , the acidic extractant exchanges its labile proton with the lithium ion under ammoniacal conditions in the aqueous phase.…”

Section: Synergistic Systems Based On An Association Of Acidic and Nementioning

confidence: 99%

Section: Synergistic Systems Based On An Association Of Acidic and Nementioning

confidence: 99%

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Highly selective transport of lithium across a supported liquid membrane

Zante

Boltoeva

Masmoudi

et al. 2020

Journal of Fluorine Chemistry

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“…A study on the recovery of lithium from alkaline brine feed using a combination of a β-diketone and solvating extractants was published by Zhang et al (61). Benzoyl-1,1,1-trifluotoaceton (HBTA) was used as chelating β-diketone.…”

Section: From Alkaline Brine Feedmentioning

confidence: 99%

Liquid-Liquid Extraction and Chromatography Process Routes for the Purification of Lithium

Schmidt

Mestmäcker

Brückner

et al. 2019

MSF

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Since several years, the lithium market is characterized by high growth rates especially due to the increasing demand for lithium-ion batteries. Therefore, the primary production is currently expanded and there is a growing interest in recycling. However, because of the chemical properties of lithium, many production processes lack efficient processes for the separation, concentration and purification of lithium. This article reviews the current use of liquid-liquid extraction (LLE) and chromatography in lithium production as well as research. Currently, the industrial application of LLE and chromatography in lithium purification is limited to the extraction of impurities and co-products. Extraction of lithium is only used as concentration step in few processes before lithium precipitation. In research and development, a wide variety of extractants and resins is investigated. In LLE, chelating extractants like crown ethers and calixarene and synergistic systems show the greatest potential. In the chromatographic separation the main focus of research lies upon cation exchange media, especially media with sulfonated ligands. However, most research is still in early development. Therefore, extensive research is needed to enable the industrial use of optimized LLE and chromatography processes in lithium production. Content TOC \o "1-3" \h \z \u HYPERLINK \l "_Toc515547308" Abstract PAGEREF _Toc515547308 \h 2 HYPERLINK \l "_Toc515547309" Content PAGEREF _Toc515547309 \h 3

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“…Various β‐diketones, including dibenzoylmethane (HDBM), 2‐thenoyltrifluoroacetone (HTTA), benzoyltrifluoroacetone (HBTA), 1‐phenyl‐1,3‐isodecanedione (LIX 54), 4,4,4‐trifluoro‐1‐(4‐tetrapropylenephenyl)‐1,3‐butanedione (LIX 51), and so on, have been investigated. While the neutral ligands studied include tri‐ n ‐butyl phosphate (TBP), tri‐ n ‐octyl phosphine oxide (TOPO), Cyanex 923 (a mixture of trialkyl phosphine oxides mainly with n ‐hexyl and n ‐octyl groups) and 1,10‐phenanthroline and its derivatives 25‐31 . The structures of the extractants are shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Selective removal of magnesium from lithium‐rich brine for lithium purification by synergic solvent extraction using β‐diketones and Cyanex 923

Binnemans

2020

AIChE Journal

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In the production of battery‐grade and high‐purity Li2CO3, it is essential to remove magnesium impurities. The state‐of‐the‐art solvent extraction (SX) process using Versatic Acid 10 and D2EHPA co‐extracts 3.3–5.5% lithium, while removing 86–98% magnesium. Here, we demonstrate that synergic SX systems containing a β‐diketone (HPMBP, HTTA or HDBM) and Cyanex 923 are highly selective for magnesium extraction over lithium (separation factor α > 1,000). The extracted magnesium and lithium complexes have the stoichiometry of [Mg∙A2∙(C923)2] and [Li∙A x∙(C923)2] (x = 1, 2), respectively (A represents deprotonated β‐diketone). The three β‐diketone synergic SX systems all considerably outperformed the Versatic Acid 10 system for magnesium removal from a synthetic solution containing 24 g L−1 Li and 0.24 g L−1 Mg. In a three‐stage batch counter‐current extraction, the HPMBP and Cyanex 923 synergic SX system removed 100% magnesium with only 0.6% co‐extraction of lithium. This excellent Mg/Li separation is the best result reported so far.

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Recovery of lithium from alkaline brine by solvent extraction with β-diketone

Cited by 106 publications

References 19 publications

Highly selective transport of lithium across a supported liquid membrane

Highly selective transport of lithium across a supported liquid membrane

Liquid-Liquid Extraction and Chromatography Process Routes for the Purification of Lithium

Selective removal of magnesium from lithium‐rich brine for lithium purification by synergic solvent extraction using β‐diketones and Cyanex 923

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