Multiple modulating energy-efficient nanofiltration membranes during high-quality drinking water towards high mineral/organic matter selectivity

Desalination, Journal Year: 2024, Volume and Issue: 588, P. 117970 - 117970

Published: Aug. 3, 2024

Language: Английский

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A sub-10 nm polyamide nanofiltration membrane from polyvinylpyrrolidone-mediated interfacial polymerization

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: 700, P. 122729 - 122729

Published: April 2, 2024

Language: Английский

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Lignin alkali regulated interfacial polymerization towards ultra-selective and highly permeable nanofiltration membrane

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 3, 2025

Thin-film composite polyamide (TFC PA) membranes hold promise for energy-efficient liquid separation, but achieving high permeance and precise separation membrane via a facile approach that is compatible with present manufacturing line remains great challenge. Herein, we demonstrate the use of lignin alkali (LA) derived from waste paper pulp as an aqueous phase additive to regulate interfacial polymerization (IP) process performance nanofiltration (NF) membrane. Various characterizations molecular dynamics simulations revealed LA can promote diffusion partition monomer piperazine (PIP) molecules into organic their uniform dispersion on substrate, accelerating IP reaction promoting greater instabilities, thus endowing formation TFC NF ultrathin, highly cross-linked, crumpled PA layer. The optimal exhibited remarkable water 26.0 L m-2 h-1 bar-1 Cl-/SO42- selectivity 191.0, which superior state-of-the-art membranes. This study provides cost-effective scalable strategy fabricating ultra-selective permeable ion-ion small compounds removal. Achieving in thin-film challenging. Here, authors

Language: Английский

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Regulating interfacial polymerization via constructed 2D metal-organic framework interlayers for fabricating nanofiltration membranes with enhanced performance

Desalination, Journal Year: 2022, Volume and Issue: 544, P. 116134 - 116134

Published: Sept. 30, 2022

Language: Английский

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A nanofiltration membrane with outstanding antifouling ability: Exploring the structure-property-performance relationship

Journal of Membrane Science, Journal Year: 2022, Volume and Issue: 668, P. 121205 - 121205

Published: Nov. 24, 2022

Language: Английский

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Highly permeable positively charged nanofiltration membranes with multilayer structures for multiple heavy metal removals

Desalination, Journal Year: 2022, Volume and Issue: 548, P. 116266 - 116266

Published: Nov. 26, 2022

Language: Английский

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Preparation strategies of the positively charged nanofiltration membrane: A comprehensive review

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 334, P. 126011 - 126011

Published: Dec. 12, 2023

Language: Английский

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Demystifying the Role of Surfactant in Tailoring Polyamide Morphology for Enhanced Reverse Osmosis Performance: Mechanistic Insights and Environmental Implications

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(4), P. 1819 - 1827

Published: Jan. 18, 2023

Surfactant-assisted interfacial polymerization (IP) has shown strong potential to improve the separation performance of thin film composite polyamide membranes. A common belief is that enhanced attributed accelerated amine diffusion induced by surfactant, which can promote IP reaction. However, we show membrane for Tween 80 (a surfactant), even though it decreased diffusion. Indeed, closely related its roughness features with numerous nanovoids. Inspired nanofoaming theory relates nanobubbles degassed during reaction, hypothesize surfactant stabilize generated tailor formation Accordingly, obtained enlarged nanovoids when was added below critical micelle concentration (CMC). In addition, both permeance and selectivity were enhanced, thanks reduced defects in layer. Increasing above CMC resulted shrunken deteriorated performance, be ascribed stabilization effect caused formation. Interestingly, better antifouling also observed surfactant-assisted Our current study provides mechanistic insights into role may have important implications more efficient membrane-based desalination water reuse.

Language: Английский

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Green and edible cyclodextrin metal-organic frameworks modified polyamide thin film nanocomposite nanofiltration membranes for efficient desalination

Journal of Membrane Science, Journal Year: 2023, Volume and Issue: 679, P. 121714 - 121714

Published: May 2, 2023

Language: Английский

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Does Surface Roughness Necessarily Increase the Fouling Propensity of Polyamide Reverse Osmosis Membranes by Humic Acid?

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(6), P. 2548 - 2556

Published: Jan. 31, 2023

Surface roughness has crucial influence on the fouling propensity of thin film composite (TFC) polyamide reverse osmosis (RO) membranes. A common wisdom is that rougher membranes tend to experience more severe fouling. In this study, we compared behaviors a smooth membrane (RO-s) and nanovoid-containing rough (RO-r). Contrary traditional belief, observed for RO-s, which can be ascribed its uneven flux distribution caused by "funnel effect". Additional tracer filtration tests using gold nanoparticles revealed patchlike particle deposition pattern, confirming adverse impact effect" water transport. contrast, experimentally lower explained by: (1) weakened thanks presence nanovoids, regulate transport pathway through (2) decreased average localized over surface due increased effective area nanovoid-induced features. The current study provides fundamental insights into critical role in fouling, may have important implications future development high-performance antifouling

Language: Английский

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