Designing an energy-efficient multi-stage selective electrodialysis process based on high-performance materials for lithium extraction

Wang, Wenguang; Hong, Guanghui; Zhang, Yanqiu; Yang, Xiaobin; Hu, Ningmeng; Zhang, Jinglan; Сорокин, Павел Б.; Shao, Lu

doi:10.1016/j.memsci.2023.121534

Cited by 54 publications

(7 citation statements)

References 51 publications

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“…It can be concluded that TFN-GP-0.2 nanofiltration membranes have a rougher membrane surface than TFC membranes, and the increased roughness usually means an increase in the effective membrane filtration area, which is beneficial for further improving the membrane permeation performance. 35,36…”

Section: Resultsmentioning

confidence: 99%

Regulating the thickness of nanofiltration membranes for efficient water purification

Tang¹,

Zhu²,

Lan³

et al. 2023

Nanoscale Adv.

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Section: Resultsmentioning

confidence: 99%

Regulating the thickness of nanofiltration membranes for efficient water purification

Tang¹,

Zhu²,

Lan³

et al. 2023

Nanoscale Adv.

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“…Commercial monovalent selective CEMs (e.g., Selemion CSO from AGC, Japan, and Neosepta CIMS from ASTOM, Japan) with a surface thin film of abundant positive charges or polycations (PC-CEMs) have been widely studied and validated for their feasibility for separating Li + from Mg 2+ . ,− Lab-fabricated monovalent selective CEMs with a polyethylenimine surface thin film have shown a higher Li/Mg selectivity than commercial CEMs, likely due to a denser surface structure or a higher positive charge density. , More recently, monovalent selective CEMs with a PA film (PA-CEM) have also been demonstrated with an improved monovalent/divalent selectivity. − These different approaches to modify a CEM to improve its Li/Mg selectivity are summarized in Figure . We note that the monovalent selective surface layer is in contact with the feed solution when it is applied in the ED process.…”

Section: Introductionmentioning

confidence: 99%

Membrane Design Principles for Ion-Selective Electrodialysis: An Analysis for Li/Mg Separation

Wang,

Lin

2024

Environ. Sci. Technol.

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Selective electrodialysis (ED) is a promising membrane-based process to separate Li + from Mg 2+ , which is the most critical step for Li extraction from brine lakes. This study theoretically compares the ED-based Li/Mg separation performance of different monovalent selective cation exchange membranes (CEMs) and nanofiltration (NF) membranes at the coupon scale using a unified mass transport model, i.e., a solution-friction model. We demonstrated that monovalent selective CEMs with a dense surface thin film like a polyamide film are more effective in enhancing the Li/Mg separation performance than those with a loose but highly charged thin film. Polyamide film-coated CEMs when used in ED have a performance similar to that of polyamidebased NF membranes when used in NF. NF membranes, when expected to replace monovalent selective CEMs in ED for Li/Mg separation, will require a thin support layer with low tortuosity and high porosity to reduce the internal concentration polarization. The coupon-scale performance analysis and comparison provide new insights into the design of composite membranes used for ED-based selective ion−ion separation.

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“…Mixed matrix membranes (MMMs), which comprise an organic polymer matrix and an inorganic segment, have received considerable attention owing to the excellent operability and molecular sieving performance offered by the combined advantages of the organic polymers and inorganic segments . Based on these characteristics, MMMs have been widely used in gas purification, CO 2 capture, olefin/paraffin separation, ion sieving, and textile wastewater treatment. − MMM formation pathways can be divided into two types: directly doping inorganic fillers into the polymer segment and using the determined reaction . Yusof et al built an MMM by incorporating a tannin-modified metal–organic framework (MOF) into a polyethersulfone (PES) matrix to improve the surface hydrophilicity and antifouling ability of the original PES membrane.…”

Section: Introductionmentioning

confidence: 99%

Thin-Film Nanocomposite Membrane Based on Mineral Silicate Maifanite for Organic Solvent Reverse Osmosis

Luo

Tong

Jia

et al. 2023

Ind. Eng. Chem. Res.

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Modern industries usually require membrane separation technologies to perform well in organic solvent systems; however, typical commercialized reverse osmosis (RO) membranes often suffer from swelling and instability. Herein, we proposed a “CCC” post-treatment method to directly upgrade a traditional RO membrane and extend its potential application in the deep purification of integrated circuit materials. This method combines inorganic maifanite particles and organic polymer adamantane structures, benefiting from the merits of inorganic and organic materials, to successfully establish a stable mixed matrix membrane (MMM) structure on a thin-film nanocomposite (TFN) membrane surface after the CCC post-treatment, involving conditioning, cross-linking, and curing. The as-prepared TFN membrane was characterized using Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive spectroscopy, scanning electron microscopy, and atomic force microscopy and evaluated using organic solvent RO. This study offers a new perspective and an effective solution for the separation of inorganic salts from organic solvents. The as-prepared TFN MMM was able to separate 99.1% of Li+, 96.8% of Ca2+, 96.9% of Zn2+, and 98.9% of Al3+ from an organic solvent through simple dead-end filtration with a stable performance and had a competitive capacity in the purification of lithium carbonate.

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Designing an energy-efficient multi-stage selective electrodialysis process based on high-performance materials for lithium extraction

Cited by 54 publications

References 51 publications

Regulating the thickness of nanofiltration membranes for efficient water purification

Regulating the thickness of nanofiltration membranes for efficient water purification

Membrane Design Principles for Ion-Selective Electrodialysis: An Analysis for Li/Mg Separation

Thin-Film Nanocomposite Membrane Based on Mineral Silicate Maifanite for Organic Solvent Reverse Osmosis

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