Preparation of acid-resistant nanofiltration membrane with dually charged separation layer for enhanced salts removal

Cao, Yang; Wan, Yinhua; Chen, Chulong; Luo, Jianquan

doi:10.1016/j.seppur.2022.120974

Cited by 21 publications

(2 citation statements)

References 46 publications

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“…Compared with the interlayer‐mediated polyamide membranes, there is room for improvement in the separation performance of the APGQD/ZIF‐8‐i membrane due to the relatively heterogeneous PASA structure (Table S6), but our membrane still exhibits much higher water permeance and an acceptable Na 2 SO 4 rejection compared to the state‐of‐the‐art acid‐resistant NF membranes reported in the literature, which is promising to achieve more efficient treatment of acidic streams with smaller membrane area and energy consumption (Figure 4D and Table S7). 8,14,16,29,50–60 …”

Section: Resultsmentioning

confidence: 99%

Catalytic template assisted interfacial polymerization for high‐performance acid‐resistant membrane preparation

et al. 2023

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Highly permeable acid-resistant nanofiltration (NF) membranes are of critical significance for the efficient treatment of acidic streams. Enhancing permeability while maintaining the high solute rejection of acid-resistant NF membranes remains a great challenge due to the low reactivity of monomers. In this work, a novel catalytic template assisted interfacial polymerization (IP) strategy of 3-aminobenzenesulfonamide (ABSA) and trimesoyl chloride (TMC) was provided to prepare a poly(amide-sulfonamide) membrane. Aminopyridine doped graphene quantum dots rich in acylation catalytic sites and ZIF-8 nanoparticles are co-loaded on a substrate as template.Benefiting from the enhanced phase integrity and self-inhibition effect of the template assisted IP process, the resulting ultra-thin acid-resistant membrane exhibits an excellent water permeance (20.4 Lm À2 h À1 bar À1 ) with a high Na 2 SO 4 rejection of 90.5%, which outperforms almost all the reported acid-resistant NF membranes.Our work paves a versatile way for synthesis of special separation membranes.

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Section: Resultsmentioning

confidence: 99%

Catalytic template assisted interfacial polymerization for high‐performance acid‐resistant membrane preparation

et al. 2023

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“…Currently, the separation and recovery of lithium ions mainly focuses on the separation of Li + from divalent cations such as Mg 2+ , Ca 2+ , Co 2+ , Ni 2+ , Mn 2+ , and Fe 2+ [24][25][26][27], and there are also some reports on the separation of Li + from Na + and K + [28][29][30]. [Bmim] + (1-Butyl-3-methylimidazolium) is an ionic liquid cation with promising applications in high-voltage electrolytes for lithium-ion batteries, but there are few reports on the separation of Li + and [Bmim] + cation.…”

Section: Introductionmentioning

confidence: 99%

The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology

Jingyi,

Xiang,

Runci

et al. 2024

Preprint

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The separation of Li+ and [Bmim]+(1-Butyl-3-methylimidazolium) by electrically driven membrane technology was studied. The effects of the types and modification processes of cation exchange membranes, current density, total cation concentration, temperature, and anion types on separation efficiency were investigated. The results indicated that it is feasible to achieve efficient separation of Li+ and [Bmim]+ using the selectivity of cation exchange membranes under electric field. Membrane CMX and the modified membrane A and B which obtained from the CMX showed obvious selective of Li+ from [Bmim]+. When the current density is 5 mA/cm2 and the feed concentrations of Li+ and [Bmim]+ are 0.3 mol/L and 0.2 mol/L, the selective transport coefficient of the modified membrane B can reach 6.2 in the first 120 minutes of the process. Reducing current density and increasing total cation concentration can improve separation efficiency. Lowering the temperature can improve the separation effect, but improvement is not obviously. Changing the anion of the feed from chloride ion to acetate has no effect on the separation.

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Acid-resistant polyamide-sulphonamide nanofiltration membrane with positive charge for efficient removal of dyes/metal ions in acidic wastewater

Li,

Zhou,

Kang

et al. 2024

Applied Surface Science

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Preparation of acid-resistant nanofiltration membrane with dually charged separation layer for enhanced salts removal

Cited by 21 publications

References 46 publications

Catalytic template assisted interfacial polymerization for high‐performance acid‐resistant membrane preparation

Catalytic template assisted interfacial polymerization for high‐performance acid‐resistant membrane preparation

The Separation of Lithium Ion and Imidazolium Cation by Electrical Driven Membrane Technology

Acid-resistant polyamide-sulphonamide nanofiltration membrane with positive charge for efficient removal of dyes/metal ions in acidic wastewater

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