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Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 301-310 doi: 10.1007/s11705-012-1204-6

Abstract: High performance polyvinylidene fluoride (PVDF) flat sheet ultrafiltration (UF) membranes have been preparedThe PVDF-PFSA membrane (5 wt-% PEG400+ 5 wt-% PFSA) had a pure water flux of 141.7 L/m ·h, a BSA rejectionThese properties were greatly superior to those of the native PVDF membrane (pure water flux of 5.6 L

Keywords： polyvinylidene fluoride     perfluorosulfonic acid     polyethylene glycol     flat sheet membrane     ultrafiltration    

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Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 35-45

Abstract:

The non-solvent phase separation (NIPS) is a highly efficient membranePoly (vinylidene fluoride) (PVDF) has excellent chemical and mechanical properties and has been widelyPVDF ultrafiltration (UF) membranes could be easily prepared by NIPS method.introduction about the research progress on the phase separation theory of PVDF UF membranes prepared by NIPS， membrane

Keywords： non-solvent induced phase inversion     polyvinylidene fluoride     ultrafiltration membrane     phase separationmechanism     membrane structure and property     membrane application    

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Incorporation of 3-dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidenefluoride membranes for desalination applications by vacuum membrane distillation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1162-1182 doi: 10.1007/s11705-022-2276-6

Abstract: fluoride matrix to fabricate lycopodium/polyvinylidene fluoride flat-sheet membrane for desalinationThe prepared lycopodium/polyvinylidene fluoride membranes and lycopodium were characterized by fieldThe optimized lycopodium/polyvinylidene fluoride membrane exhibits superior performance compared to theneat polyvinylidene fluoride membrane in terms of flux, salt rejection, water contact angle, and hydrophobicityneat polyvinylidene fluoride membrane, optimum membrane, and agglomerated membrane (with high lycopodium

Keywords： lycopodium     hydrophobicity     vacuum membrane distillation     desalination    

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PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: Polyvinylidene fluoride grafted with poly(ethylene glycol) methyl ether methacrylate (PVDF-g-PEGMA) wasstudy, we explored the effect of the copolymer mixture additives with different synthesis times on cast membraneHowever, more residual PEGMA contributed to helping more PEGMA segments migrate to the membrane surfaceThe pure water fluxes of the blended membrane with reaction times of 9 h, 19 h, and 29 h are 5445 L·mThe membrane with PVDF-g-PEGMA at 19 h exhibits the best foulant rejection and cleaning recovery due

Keywords： Polyvinylidene fluoride ultrafiltration membrane     Amphiphilic copolymer     Blended modification     High flux    

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An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1355-5

Abstract: The membrane had ultrahigh pure water flux and was stable under harsh pH conditions• The hydration layer on the membrane surface prevented oil droplets adhesion.one-step oxidant-induced ultrafast co-deposition of naturally available catechol/chitosan on a porous polyvinylidenefluoride (PVDF) substrate., which was 70% higher than that of the pristine PVDF membrane.

Keywords： Antifouling     Catechol/chitosan co-deposition     Oil-in-water emulsions separation     Underwater superoleophobic    

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Preparation of polyvinylidene PVDF membrane via thermally induced phase separation and its application

Tang Yuanhui,Lin Yakai and Wang Xiaolin

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 24-34

Abstract:

Nowadays membrane technology has been widely employed in the treatmentIn the last decade， plenty of work focused on the preparation and industrialization of advanced polyvinylidenefluoride (PVDF) membranes with excellent performance has been carried out by the Chemical EngineeringSecondly， advanced production of PVDF hollow-fiber membrane was achieved by an effective combinationFinally， different modules were designed and fabricated according to the characteristic of PVDF membrane

Keywords： thermally induced phase separation     polyvinylidene fluoride     wastewater treatment     membrane preparation    

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Preparation and characterization of asymmetric ultrafiltration membrane for effective recovery of proteases

Nora’aini ALI, Fadhilati HASSAN, Sofiah HAMZAH

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 184-191 doi: 10.1007/s11705-012-1288-z

Abstract: Asymmetric polysulfone and polyethersulfone ultrafiltration (PSf-UF and PES-UF) membranes with threesimple dry/wet phase inversion technique and were characterized in terms of permeability coefficient, membraneThe membrane with the best performance, 15 wt-% PSf-UF, was further tested with actual surimi wash waterretention of protease was 96% with a flux of 25.6 L/(m ·h) which was achieved with the 15 wt-% PSf-UF membrane

Keywords： membrane     ultrafiltration     proteases     surimi wash water    

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On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 490-498 doi: 10.1007/s11705-016-1600-4

Abstract: Membrane fouling has been investigated by using a polysulfone ultrafiltration membrane with the molecularThe membrane fouling mechanism was simulated with three classical membrane fouling models.The membrane image and pollutants were analyzed by scanning electron microscopy and gas chromatography-massThrough regression analysis, the fouling of polysulfone ultrafiltration membrane could be fitted veryThe membrane pollutants were identified as phthalate esters and long-chain alkenes by GC-MS, and a certain

Keywords： membrane fouling     ultrafiltration membrane     coal gasification wastewater     rejection coefficient    

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Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal Article

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Engineering 2019, Volume 5, Issue 5,   Pages 865-871 doi: 10.1016/j.eng.2019.07.021

Abstract:

In this study, a copper ferrocyanide/silica/polyvinylidene fluoride (CuFC/SiO2/PVDF) hollow-fibercomposite membrane was successfully synthesized through a facile and effective crosslinking strategyThe surface morphology and chemical composition of the composite membrane were analyzed using scanningThe composite membrane showed a high Cs rejection rate and membrane flux at the three layers of CuFCThe modified membrane could be effectively regenerated many times using ammonium nitrate (NH4

Keywords： Cesium removal     Composite membrane     Copper ferrocyanide     Polyvinylidene fluoride    

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Effects of a dynamic membrane formed with polyethylene glycol on the ultrafiltration of natural organic

Boksoon KWON, Noeon PARK, Jaeweon CHO,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 172-182 doi: 10.1007/s11783-010-0002-y

Abstract: The formation of a dynamic membrane (DM) was investigated using polyethylene glycol (PEG) (molecularnatural organic matters (NOM), Dongbok Lake NOM (DLNOM) and Suwannee River NOM (SRNOM) were used in the ultrafiltrationTo evaluate the effects of the DM with PEG on ultrafiltration, various transport experiments were conducted, and the analyses of the NOM in the membrane feed and permeate were performed using high performanceformed with PEG can be summarized as follows: (1) PEG interferes with NOM transmission through the ultrafiltration

Keywords： dynamic membrane     natural organic matters     ultrafiltration membrane performance     effective PSD     effective    

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Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separationand application in direct contact membrane distillation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 720-730 doi: 10.1007/s11705-021-2098-y

Abstract: and environmentally safe diluent, acetyl tributyl citrate, was employed to prepare poly(vinylidene fluorideEffects of the polymer concentration on the phase diagram, membrane morphology, hydrophobicity, poreIn direct contact membrane distillation operation with 3.5 wt-% sodium chloride solution

Keywords： poly(vinylidene fluoride)-co-hexafluoropropylene     thermally induced phase separation     non-toxicdiluent     direct contact membrane distillation    

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Electro-assisted CNTs/ceramic flat sheet ultrafiltration membrane for enhanced antifouling and separation

Shuo Wei, Lei Du, Shuo Chen, Hongtao Yu, Xie Quan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1303-4

Abstract: Abstract • A stable and electroconductive CNTs/ceramic membrane was fabricated. • The membrane withUltrafiltration is employed as an important process for water treatment and reuse, which is of greatIn this work, a CNTs/ceramic flat sheet ultrafiltration membrane coupled with electro-assistance wasThe CNTs/ceramic flat sheet membrane was fabricated by coating cross-linked CNTs on ceramic membrane,that of the PVDF commercial membrane.

Keywords： Ultrafiltration     Electro-assistance     CNTs     Membrane fouling mitigation    

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Design of nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 9, doi: 10.1007/s11783-022-1550-7

Abstract:

• A fine fibre (40–60 nm diameter) interlayer (~1 µm thickness) was electrospun.

Keywords： Forward osmosis     Electro-spinning     Interfacial polymerisation     Fouling     Polyvinylidene fluoride    

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Comparison of membrane fouling in ultrafiltration of down-flow and up-flow biological activated carbon

Lu Ao, Wenjun Liu, Yang Qiao, Cuiping Li, Xiaomao Wang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1046-7

Abstract:

The UF membrane fouling by down- and up-flow BAC effluents were compared

Up-flow BAC effluent fouled the membrane faster

Keywords： Ultrafiltration     Membrane fouling     Down-flow biological activated carbon     Up-flow biological activated carbon    

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weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltrationmembrane: thermodynamic and formation hydrodynamic behavior

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1484-1502 doi: 10.1007/s11705-023-2331-y

Abstract: Rheological and ultrasonic separation kinetic measurements were also carried out to develop an ultrafiltrationmembrane mechanism.The extracted membrane properties and filtration capabilities were systematically compared to the proposedresults, valuable insights into the selection of hydrophilic copolymers were provided to tailor the membrane

Keywords： polysulfone     blend modification     ultrafiltration membrane     formation hydrodynamics     poly(ethylene-co-vinyl    

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Title Author Date Type Operation

Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes

Jiquan MA, Junhong ZHAO, Zhongbin REN, Lei LI

Journal Article

Preparation and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Journal Article

Incorporation of 3-dimensional lycopodium with hydrophobic nature and interconnected nano-channels into polyvinylidenefluoride membranes for desalination applications by vacuum membrane distillation

Journal Article

PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

An antifouling catechol/chitosan-modified polyvinylidene fluoride membrane for sustainable oil-in-water

Shanshan Zhao, Zhu Tao, Liwei Chen, Muqiao Han, Bin Zhao, Xuelin Tian, Liang Wang, Fangang Meng

Journal Article

Preparation of polyvinylidene PVDF membrane via thermally induced phase separation and its application

Tang Yuanhui,Lin Yakai and Wang Xiaolin

Journal Article

Preparation and characterization of asymmetric ultrafiltration membrane for effective recovery of proteases

Nora’aini ALI, Fadhilati HASSAN, Sofiah HAMZAH

Journal Article

On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

Journal Article

Engineering a High-Selectivity PVDF Hollow-Fiber Membrane for Cesium Removal

Shiyuan Ding, Lilan Zhang, Yang Li, Li´an Hou

Journal Article

Effects of a dynamic membrane formed with polyethylene glycol on the ultrafiltration of natural organic

Boksoon KWON, Noeon PARK, Jaeweon CHO,

Journal Article

Poly(vinylidene fluoride--hexafluoro propylene) membranes prepared via thermally induced phase separationand application in direct contact membrane distillation

Journal Article

Electro-assisted CNTs/ceramic flat sheet ultrafiltration membrane for enhanced antifouling and separation

Shuo Wei, Lei Du, Shuo Chen, Hongtao Yu, Xie Quan

Journal Article

Design of nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

Journal Article

Comparison of membrane fouling in ultrafiltration of down-flow and up-flow biological activated carbon

Lu Ao, Wenjun Liu, Yang Qiao, Cuiping Li, Xiaomao Wang

Journal Article

weight and vinyl alcohol content on morphology, antifouling, and permeation properties of polysulfone ultrafiltrationmembrane: thermodynamic and formation hydrodynamic behavior

Journal Article