Study on the recovery of lithium from high Mg2+/Li+ ratio brine by nanofiltration

Bi, Qincheng; Zhang, Zhiqiang; Zhao, Chenying; Tao, Zhenqi

doi:10.2166/wst.2014.426

Cited by 71 publications

(20 citation statements)

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“…Meanwhile, the production of lithium and its compounds for lithium‐ion batteries has attracted more and more attention in the global lithium industry . Salt lake brines are considered as valuable resources having great potential for the development of the lithium industry in the world, and various methods such as chemical precipitation, solvent extraction, and membrane separation have been developed for lithium extraction from brines. Nevertheless, the recovery of lithium from a high Mg/Li ratio brine has been a key technical problem in the world due to the similar chemical properties of Mg 2+ and Li + .…”

mentioning

confidence: 99%

New Insights into the Application of Lithium‐Ion Battery Materials: Selective Extraction of Lithium from Brines via a Rocking‐Chair Lithium‐Ion Battery System

Song

et al. 2018

Global Challenges

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Lithium extraction from high Mg/Li ratio brine is a key technical problem in the world. Based on the principle of rocking‐chair lithium‐ion batteries, cathode material LiFePO 4 is applied to extract lithium from brine, and a novel lithium‐ion battery system of LiFePO 4 | NaCl solution | anion‐exchange membrane | brine | FePO 4 is constructed. In this method, Li + is selectively absorbed from the brine by FePO 4 (Li + + e + FePO 4 = LiFePO 4 ); meanwhile, Li + is desorbed from LiFePO 4 (LiFePO 4 − e = Li + + FePO 4 ) and enriched efficiently. To treat a raw brine solution, the Mg/Li ratio decreases from the initial 134.4 in the brine to 1.2 in the obtained anolyte and 83% lithium is extracted. For the treatment of an old brine solution, the Mg/Li ratio decreases from the initial 48.4 in the brine to 0.5 and the concentration of lithium in the anolyte is accumulated about six times (from the initial 0.51 g L −1 in the brine to 3.2 g L −1 in the anolyte), with the absorption capacity of about 25 mg (Li) g (LiFePO 4 ) −1 . Additionally, it displays a great perspective on the application in light of its high selectively, good cycling performance, effective lithium enrichment, environmental friendliness, low cost, and avoidance of poisonous organic reagents and harmful acid or oxidant.

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confidence: 99%

New Insights into the Application of Lithium‐Ion Battery Materials: Selective Extraction of Lithium from Brines via a Rocking‐Chair Lithium‐Ion Battery System

Song

et al. 2018

Global Challenges

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“…The high retention of Al 3+ is because dielectric exclusion (DE) is generated and exclusion energy is proportional to the square of the ionic charge including cations and anions . Concentration polarization results in a decrease in Al 3+ retention with the increase of r Al/Li .…”

Section: Resultsmentioning

confidence: 99%

The Application of Nanofiltration for Separating Aluminium and Lithium from Lepidolite Leaching Solution

Gao

Wang²,

Zhao³

et al. 2020

ChemistrySelect

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This paper concerns the feasibility of separating Al 3 + and Li + by nanofiltration, and a new method for separating and recovering lithium from lepidolite leaching solution was proposed. Factors like salinity, mass ratio of Al 3 + /Li + , operating pressure, temperature and proportion of SO 4 2À were investigated under single-stage cycle mode. Multiple linear regression was used to further study the mixed effect of pressure and temperature on separation efficiency and membrane flux. The results suggest that the combination of charge effect and steric hindrance effect plays a decisive role in the separation of lithium and aluminum. When the salinity of the feed solution is 45 g/L and the mass ratio of Al/Li is 6, a combination of higher temperature and pressure within the range that the membrane can withstand is beneficial to improve separation efficiency. And a proper amount of SO 4 2À is beneficial for the separation of aluminum and lithium. Overall, it is found that nanofiltration has a relatively good separation efficiency of lithium and aluminum and provided a novel vision for future separation from lepidolite leaching solution. Table 1. Principle of traditional aluminum removal methods. Methods Principle Alkali Al 3 + + 4OH À = AlO 2 À + 2H 2 O Acid 2Al 3 + + 3(COOH) 2 ⋅ 2H 2 O = Al 2 (C 2 O 4 ) 3 ⋅ 2H 2 O# + 6H + Extractant Selectively forming a complex with aluminum ChemistrySelect Full Papers

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“…The NF membrane surface usually exhibits chargeability because the ionizable groups dissociate from the membrane surface or pores. During the filtration process, electrostatic interactions between the membrane and ions can directly affect the mass transfer of ions [111,202,203]. Ions with higher hydration energy or larger ion radius in the solution are more likely to be trapped by the membrane [29,204].…”

Section: Nanofiltration Membrane Techniquementioning

confidence: 99%

“…Charged NF membranes can be divided into positively and negatively charged membranes, the latter of which are more commonly used for commercial purpose. Several commercial NF membranes have been tested to explore their feasibility for lithium separation, such as commercial NF membrane NF90 [29], Desal-5 DL [205], and DK-1812 [203]. Somorani et al applied the commercial NF membrane NF90 and low-pressure reverse osmosis (LPRO) membrane to investigate the separation performance of lithium in the diluted Chott Djerid (Tunisia) brine [29].…”

Section: Nanofiltration Membrane Techniquementioning

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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Study on the recovery of lithium from high Mg2+/Li+ ratio brine by nanofiltration

Cited by 71 publications

References 0 publications

New Insights into the Application of Lithium‐Ion Battery Materials: Selective Extraction of Lithium from Brines via a Rocking‐Chair Lithium‐Ion Battery System

New Insights into the Application of Lithium‐Ion Battery Materials: Selective Extraction of Lithium from Brines via a Rocking‐Chair Lithium‐Ion Battery System

The Application of Nanofiltration for Separating Aluminium and Lithium from Lepidolite Leaching Solution

Materials for lithium recovery from salt lake brine

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