Extraction of lithium from Chinese salt-lake brines by membranes: Design and practice

Xu, Shanshan; Song, Jianfeng; Bi, Qincheng; Chen, Qing; Zhang, Weiming; Qian, Zexin; Zhang, Lei; Xu, Shiai; Tang, Na; He, Tianbai

doi:10.1016/j.memsci.2021.119441

Cited by 167 publications

(63 citation statements)

References 169 publications

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“…The solvent extraction method represents the most in-depth study of the neutral phosphorus-containing TBP extraction system, but it has not been industrialized because of the serious corrosion of TBP to the equipment and the easy dissolution during the stripping process [3]. The emerging electrodialysis technology also needs to be improved owing to research work such as membrane life and operating costs under long-term operating conditions [11]. In contrast, the adsorption method is widely used because of its simple operation and high recovery rate.…”

Section: Introductionmentioning

confidence: 99%

Crown Ether Grafted Graphene Oxide/Chitosan/Polyvinyl Alcohol Nanofiber Membrane for Highly Selective Adsorption and Separation of Lithium Ion

Zheng

Hua

et al. 2021

Nanomaterials

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Nanofiber membranes were successfully prepared with crown ether (CE) functionalized graphene oxide (GO), chitosan (CS), and polyvinyl alcohol (PVA) by low-temperature thermally induced liquid–liquid phase separation. The physical and chemical properties and adsorption performance of nanofiber membrane were studied through SEM, FT-IR, XRD, and static adsorption experiments. The results show that the specific surface area of the nanofiber membrane is as high as 101.5 m2∙g−1. The results of static adsorption experiments show that the maximum adsorption capacity of the nanofiber membrane can reach 168.50 mg∙g−1 when the pH is 7.0. In the selective adsorption experiment, the nanofiber membrane showed high selectivity for Li+ in salt lake brine. After five cycles, the material still retains 88.31% of the adsorption capacity. Therefore, it is proved that the material has good regeneration ability.

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Section: Introductionmentioning

confidence: 99%

Crown Ether Grafted Graphene Oxide/Chitosan/Polyvinyl Alcohol Nanofiber Membrane for Highly Selective Adsorption and Separation of Lithium Ion

Zheng

Hua

et al. 2021

Nanomaterials

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“…Besides, fast sorption kinetics was observed and was attributed to the 1D hydrophilic channels, which created a favorable situation for the formation of well-defined water cluster structures. , Furthermore, the pore opening size of the 1D channels is around 0.60 nm in diameter, which is between the diameters of water molecules (0.28 nm) and common hydrated ions (≥0.66 nm) (Table S1). Therefore, water desalination can be realized through the size-exclusion mechanism (Figure ). Additionally, cheap metal and ligand sources are available, and water can be used as the solvent for the production of MOF-303.…”

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confidence: 99%

Highly Water-Permeable Metal–Organic Framework MOF-303 Membranes for Desalination

et al. 2021

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New membrane materials with excellent water permeability and high ion rejection are needed. Metal–organic frameworks (MOFs) are promising candidates by virtue of their diversity in chemistry and topology. In this work, continuous aluminum MOF-303 membranes were prepared on α-Al2O3 substrates via an in situ hydrothermal synthesis method. The membranes exhibit satisfying rejection of divalent ions (e.g., 93.5% for MgCl2 and 96.0% for Na2SO4) on the basis of a size-sieving and electrostatic-repulsion mechanism and unprecedented permeability (3.0 L·m–2·h–1·bar–1·μm). The water permeability outperforms typical zirconium MOF, zeolite, and commercial polymeric reverse osmosis and nanofiltration membranes. Additionally, the membrane material exhibits good stability and low production costs. These merits recommend MOF-303 as a next-generation membrane material for water softening.

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“…This property determines the possibility of desalination and concentration of electrolyte solutions by the electrodialysis method [1][2][3]. A good counterion permselectivity is needed for numerous applications of IEMs: for processing solutions in the agro-food industry, in particular, for the production of fertilizers [4,5], in fuel cells [6][7][8][9], flow batteries [9][10][11] and other processes [12][13][14][15]. Water treatment remains an important application of IEMs [16,17], the significance of which increases due to the degradation of water quality in natural sources affected by human activity [18,19].…”

Section: Introductionmentioning

confidence: 99%

Mathematical Description of the Increase in Selectivity of an Anion-Exchange Membrane Due to Its Modification with a Perfluorosulfonated Ionomer

Kozmai

Pismenskaya

Nikonenko

2022

IJMS

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In this paper, we simulate the changes in the structure and transport properties of an anion-exchange membrane (CJMA-7, Hefei Chemjoy Polymer Materials Co. Ltd., China) caused by its modification with a perfluorosulfonated ionomer (PFSI). The modification was made in several stages and included keeping the membrane at a low temperature, applying a PFSI solution on its surface, and, subsequently, drying it at an elevated temperature. We applied the known microheterogeneous model with some new amendments to simulate each stage of the membrane modification. It has been shown that the PFSI film formed on the membrane-substrate does not affect significantly its properties due to the small thickness of the film (»4 µm) and similar properties of the film and substrate. The main effect is caused by the fact that PFSI material “clogs” the macropores of the CJMA-7 membrane, thereby, blocking the transport of coions through the membrane. In this case, the membrane microporous gel phase, which exhibits a high selectivity to counterions, remains the primary pathway for both counterions and coions. Due to the above modification of the CJMA-7 membrane, the coion (Na+) transport number in the membrane equilibrated with 1 M NaCl solution decreased from 0.11 to 0.03. Thus, the modified membrane became comparable in its transport characteristics with more expensive IEMs available on the market.

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Extraction of lithium from Chinese salt-lake brines by membranes: Design and practice

Cited by 167 publications

References 169 publications

Crown Ether Grafted Graphene Oxide/Chitosan/Polyvinyl Alcohol Nanofiber Membrane for Highly Selective Adsorption and Separation of Lithium Ion

Crown Ether Grafted Graphene Oxide/Chitosan/Polyvinyl Alcohol Nanofiber Membrane for Highly Selective Adsorption and Separation of Lithium Ion

Highly Water-Permeable Metal–Organic Framework MOF-303 Membranes for Desalination

Mathematical Description of the Increase in Selectivity of an Anion-Exchange Membrane Due to Its Modification with a Perfluorosulfonated Ionomer

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