Lithium extraction from synthetic brine with high Mg2+/Li+ ratio using the polymer inclusion membrane

Zhang, Cheng-Yi; Mu, Yingxin; Zhao, Song; Zhang, Wen; Wang, Yuxin

doi:10.1016/j.desal.2020.114710

Cited by 65 publications

(23 citation statements)

References 74 publications

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“…The typical channel size of our system is the order of tens of microns, so it will not suffer from clogging problems . Zhang et al added new material to the extraction system of polymer inclusion membrane to extract Li + from the Mg 2+ rich solution (the initial Mg 2+ /Li + molar ratio is 15) [ 44 ]. They have increased the extraction rate of Li + by 20%.…”

Section: Resultsmentioning

confidence: 99%

Numerical Simulation of Continuous Extraction of Li+ from High Mg2+/Li+ Ratio Brines Based on Free Flow Ion Concentration Polarization Microfluidic System

Zhang

Xing

et al. 2021

Membranes

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Ion concentration polarization (ICP) is a promising mechanism for concentrating and/or separating charged molecules. This work simulates the extraction of Li+ ions in a diluted high Mg2+/Li+ ratio salt lake brines based on free flow ICP focusing (FF-ICPF). The model solution of diluted brine continuously flows through the system with Li+ slightly concentrated and Mg2+ significantly removed by ICP driven by external pressure and perpendicular electric field. In a typical case, our results showed that this system could focus Li+ concentration by ~1.28 times while decreasing the Mg2+/Li+ ratio by about 85% (from 40 to 5.85). Although Li+ and Mg2+ ions are not separated as an end product, which is preferably required by the lithium industry, this method is capable of decreasing the Mg2+/Li+ ratio significantly and has great potential as a preprocessing technology for lithium extraction from salt lake brines.

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Section: Resultsmentioning

confidence: 99%

Numerical Simulation of Continuous Extraction of Li+ from High Mg2+/Li+ Ratio Brines Based on Free Flow Ion Concentration Polarization Microfluidic System

Zhang

Xing

et al. 2021

Membranes

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“…The surface zeta potential of membranes was characterized with a Sur-PASS electrokinetic analyzer (Anton Paar, Graz, Austria). Specifically, 1 mmol•L −1 KCl aqueous solution was used as the electrolyte, and 0.1 mol•L −1 HCl and 0.1 mol•L −1 KOH aqueous solution was used to control the pH value (3)(4)(5)(6)(7)(8)(9)(10). The gap height of the measuring cell was fixed at 100 μm and the membranes were soaked in electrolyte for at least 4 h before the measurement.…”

Section: Characterization and Measurementmentioning

confidence: 99%

“…Lithium is known as "an energy metal in the 21st century" and its demand in the energy field, e.g., as batteries and nuclear energy, has been increasing in recent years [1][2][3]. Statistics reveal that over 60% of lithium reserves are present in continental brine [4], which highlights the importance of developing more efficient technology for the recovery of lithium from brine [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of High-Performance Nanofiltration Membrane Using Polydopamine and Carbon Nitride as the Interlayer

Tang

et al. 2022

Separations

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In order to recover lithium from brine with a high Mg2+/Li+ ratio, a positively charged nanofiltration (NF) membrane was prepared by depositing polydopamine (PDA)-coated graphitic carbon nitride (g-C3N4) as the interlayer (PDA-g-C3N4) and the interfacial polymerization (IP) of polyethyleneimine (PEI) and trimesoyl chloride (TMC) was carried out. Under optimal conditions, the water contact angle of the composite membrane is only 55.5° and the isoelectric point (IEP) is 6.01. The final positively charged NF membrane (M5) exhibits high permeance (10.19 L·m−2·h−1·bar−1) and high rejection of Mg2+ (98.20%) but low rejection of Li+ (13.33%). The separation factor (SF) is up to 48.08, and the Mg2+/Li+ ratio of the permeate is 0.036 in the simulated brine. In conclusion, the M5 membrane shows a good separation performance for salt lake brine (SF = 12.79 and Mg2+/Li+ ratio of the permeate = 1.43) and good fouling resistance. Therefore, the positively charged M5 membrane with PDA-g-C3N4 as the interlayer has the potential to be used for the recovery of lithium from brine.

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“…This fact indicated that the solubility of Aliquat 336 in the aqueous solution was pH-dependent and was very low in highly acidic aqueous solution, about 0.08 g/100 mL in a 2 mol L −1 HCl solution at room temperature [38]. Zhang et al utilized a PVC-based PIMs containing tributylphosphate (TBP)/FeCl 3 as the extractant and revealed a 40% decrease in the extraction ratio of Li(I) after the third cycle due to the considerable extractant loss [39]. Kiswandono et al observed the same problem of extractant loss when studying the transport of phenol using PVC-based PIMs containing copoly(eugenol-divinylbenzene) (DVB) as the extractant.…”

Section: ■ Limitations Of Pims Prepared Using Common Base Polymers (P...mentioning

confidence: 99%

Improving the Performance of Polymer Inclusion Membranes in Separation Process Using Alternative Base Polymers: A Review

et al. 2021

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Polymer inclusion membrane (PIM) has recently evolved as an alternative separation technique to conventional solvent extraction as it eliminates the use of toxic solvents, reduces separation cost, and simplifies the separation process. PIM is the new generation of a liquid membrane made by casting solution containing liquid phases (extractant and plasticizer/modifier) and base polymers. Despite its better performance and stability in comparison to the previous types of liquid membranes, PIM's robustness for applications on an industrial scale is still considered insufficient mainly due to its limited stability in the long-term separation process. In recent years, different approaches have been devoted to improving the stability of PIM while maintaining its performance. This review aims to summarize and evaluate the current literature on the improvement of the performance of PIMs with particular focus on the use of alternative base polymers, including non-conventional linear homopolymers, copolymers, or cross-linking polymers. Furthermore, more emphasis is given to the composition, fabrication process, and application of the PIMs. Finally, the performance of the PIMs with the alternative base polymers in terms of extraction rate and long-term stability is presented and compared to the PIMs fabricated using their corresponding common base polymers.

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Lithium extraction from synthetic brine with high Mg2+/Li+ ratio using the polymer inclusion membrane

Cited by 65 publications

References 74 publications

Numerical Simulation of Continuous Extraction of Li+ from High Mg2+/Li+ Ratio Brines Based on Free Flow Ion Concentration Polarization Microfluidic System

Numerical Simulation of Continuous Extraction of Li+ from High Mg2+/Li+ Ratio Brines Based on Free Flow Ion Concentration Polarization Microfluidic System

Fabrication of High-Performance Nanofiltration Membrane Using Polydopamine and Carbon Nitride as the Interlayer

Improving the Performance of Polymer Inclusion Membranes in Separation Process Using Alternative Base Polymers: A Review

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