Hydrophilic nanoporous ion-exchange membranes as a stabilizing barrier for liquid–liquid membrane extraction of lithium ions

Song, Jianfeng; Li, Xuemei; Zhang, Yunyan; Yin, Yong; Zhao, Baolong; Li, Chunxia; Kong, Dingfeng; He, Tianhu

doi:10.1016/j.memsci.2014.08.010

Cited by 64 publications

(31 citation statements)

References 26 publications

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“…A double-channel cross-flow diffusion setup was used to measure the diffusion of Li + (30 ± 0.2°C); the details of this setup were reported in our previous paper. 18 Briefly, the membrane samples were clamped in the test module. The feed chamber was filled with a 0.1 mol L −1 LiCl solution, and the receiving chamber was filled with deionized water.…”

Section: Diffusionmentioning

confidence: 99%

“…It acts as a barrier for the organic extractant, meaning that the contact of the membrane materials to the organics is only at the interface and, therefore, prolonged stability is expected. Besides the benefit of avoiding the back‐mixing/flooding occurring in conventional liquid–liquid extraction equipment, no loss of organic to aqueous phase makes membrane extraction a green environmentally friendly separation technology . Because a polymeric membrane barrier is utilized in this system, not only solvent resistance, but also improvement of the extraction efficiency via reduction of the mass transfer resistance by the barrier membrane is critical …”

Section: Introductionmentioning

confidence: 99%

“…Song et al . reported using sulfonated polyether ether ketone (SPEEK)/ polyethersulfone (PES) blend membranes for lithium extraction and separation of copper and nickel, but with limited stability. Membranes made from ethylene vinyl alcohol (EVAL) have both hydrophobic solvent‐resistant and hydrophilic ion permeable units, conferring solvent resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Besides the benefit of avoiding the back-mixing/flooding occurring in conventional liquid-liquid extraction equipment, no loss of organic to aqueous phase makes membrane extraction a green environmentally friendly separation technology. [17][18][19] Because a polymeric membrane barrier is utilized in this system, not only solvent resistance, but also improvement of the extraction efficiency via reduction of the mass transfer resistance by the barrier membrane is critical. 1 Exploration of potential applications of a solvent-resistant membrane has been carried out by our group over the past decade for the extraction of lithium from salt-lake brine.…”

Section: Introductionmentioning

confidence: 99%

“…6,43,44 However, there is no long-term stability evidence using ion exchange membranes for extraction purposes, although solvent resistance has been significantly improved. 45,46 Song et al reported using sulfonated polyether ether ketone (SPEEK)/polyethersulfone (PES) blend membranes for lithium extraction 18 and separation of copper and nickel, 47 but with limited stability. Membranes made from ethylene vinyl alcohol (EVAL) have both hydrophobic solvent-resistant and hydrophilic ion permeable units, conferring solvent resistance.…”

Section: Introductionmentioning

confidence: 99%

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Increasing lithium extraction performance by adding sulfonated poly (ether ether ketone) into block‐copolymer ethylene vinyl alcohol membrane

Chunfeng

Song

Huang

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND High efficiency membrane extraction (ME) of lithium from brine has been constrained by membrane mass transfer resistance. We report here a new solvent‐resistant membrane produced from ethylene vinyl alcohol (EVAL) and sulfonated polyether ether ketone (SPEEK). RESULTS The effect of the SPEEK on the thermodynamics and kinetics of demixing to the membrane morphology was investigated systematically. Addition SPEEK created extra resistance to the movement of the polymer chains in solution which was reflected in the reduced gelation diffusion coefficient. About 0.5 wt% of SPEEK was sufficient to reduce the mass transfer resistance of lithium ions (Li+). Membrane thickness showed linear correlation with Li+ flux, but was limited by its weak mechanical strength. Finally, a composite EVAL/SPEEK membrane supported by a thin loose nonwoven fabric showed a stress of 12.5 MPa, nearly 10‐fold greater than the unsupported membrane, and the highest lithium extraction flux of 4.80 × 10−8 mol cm−2 s−1. CONCLUSION The work provides a rationale for developing mechanically stable, high extraction flux membranes for ME. © 2020 Society of Chemical Industry

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Section: Diffusionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Increasing lithium extraction performance by adding sulfonated poly (ether ether ketone) into block‐copolymer ethylene vinyl alcohol membrane

Chunfeng

Song

Huang

et al. 2020

J of Chemical Tech & Biotech

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Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium‐Ion Separation

et al. 2016

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Extraction of lithium ions from salt-lake brines is very important to produce lithium compounds.H erein, we report an ew approach to construct polystyrene sulfonate (PSS) threaded HKUST-1 metal-organic framework (MOF) membranes through an in situ confinement conversion process. The resulting membrane PSS@HKUST-1-6.7, with unique anchored three-dimensional sulfonate networks,s hows av ery high Li + conductivity of 5.53 10 À4 Scm À1 at 25 8 8C, 1.89 10 À3 Scm À1 at 70 8 8C, and Li + flux of 6.75 mol m À2 h À1 ,w hich are five orders higher than that of the pristine HKUST-1membrane.Attributed to the different sizesieving effects and the affinity differences of the Li + ,N a + ,K + ,a nd Mg 2+ ions to the sulfonate groups,t he PSS@HKUST-1-6.7 membrane exhibits ideal selectivities of 78, 99, and 10296 for Li + /Na + , Li + /K + ,Li + /Mg 2+ and real binary ion selectivities of 35, 67, and 1815, respectively,t he highest ever reported among ionic conductors and Li + extraction membranes.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under http://dx.

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Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium‐Ion Separation

et al. 2016

View full text Add to dashboard Cite

Extraction of lithium ions from salt-lake brines is very important to produce lithium compounds. Herein, we report a new approach to construct polystyrene sulfonate (PSS) threaded HKUST-1 metal-organic framework (MOF) membranes through an in situ confinement conversion process. The resulting membrane PSS@HKUST-1-6.7, with unique anchored three-dimensional sulfonate networks, shows a very high Li conductivity of 5.53×10 S cm at 25 °C, 1.89×10 S cm at 70 °C, and Li flux of 6.75 mol m h , which are five orders higher than that of the pristine HKUST-1 membrane. Attributed to the different size sieving effects and the affinity differences of the Li , Na , K , and Mg ions to the sulfonate groups, the PSS@HKUST-1-6.7 membrane exhibits ideal selectivities of 78, 99, and 10296 for Li /Na , Li /K , Li /Mg and real binary ion selectivities of 35, 67, and 1815, respectively, the highest ever reported among ionic conductors and Li extraction membranes.

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Hydrophilic nanoporous ion-exchange membranes as a stabilizing barrier for liquid–liquid membrane extraction of lithium ions

Cited by 64 publications

References 26 publications

Increasing lithium extraction performance by adding sulfonated poly (ether ether ketone) into block‐copolymer ethylene vinyl alcohol membrane

Increasing lithium extraction performance by adding sulfonated poly (ether ether ketone) into block‐copolymer ethylene vinyl alcohol membrane

Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium‐Ion Separation

Polystyrene Sulfonate Threaded through a Metal–Organic Framework Membrane for Fast and Selective Lithium‐Ion Separation

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