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Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1470-1483 doi: 10.1007/s11705-023-2329-5

Abstract: with amino groups (NH2-GOQDs) were tailored to the surface of a thin-film composite (TFC) membranesurface for optimizing forward osmosis (FO) membrane performance using the amide coupling reaction.The results jointly demonstrated hydrophilicity and surface roughness of the membrane enhanced afterIn the dynamic biofouling experiment, TFC-100 membrane showed a lower flux decline than TFC membrane.was notably better than that of TFC membrane (63%).

Keywords： forward osmosis membrane     graphene oxide quantum dots     graft modification     anti-fouling membrane     XDLVO    

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Progress ofanti-fouling reverse osmosis/nanofiltration membrane

Qin Jiaxu,Zhang Lin,Hou Li´an

Strategic Study of CAE 2014, Volume 16, Issue 7,   Pages 30-35

Abstract:

Anti-fouling membrane is an important research subject of reverse osmosis(RO) and the key to RO membrane application.In this paper, classification and influence factors of RO membrane-fouling are reviewed.Attention is focused on methods to improve anti-fouling property of RO membrane, including design ofProspect of anti-fouling RO membrane is made as well.

Keywords： reverse osmosis membrane     anti-fouling     influence factor     membrane materials     modification method    

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Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4,   Pages 492-502 doi: 10.1007/s11783-012-0407-x

Abstract: Moreover, permeate flux, retention factor, porosity, contact angle and anti-fouling tests were carriedAmong all the prepared membranes, PVDF/TiO membrane containing 10 vol.% TiO exhibited the best hydrophilicityBesides, the bovine serum albumin rejection of the hybrid membrane was improved evidently from 52.3%

Keywords： poly(vinylidene fluoride) (PVDF) membrane     nano-TiO2     anti-fouling performance     water treatment    

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Ceramic membrane fouling mechanisms and control for water treatment

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1726-9

Abstract:

● The fouling is summarized based on ceramic membrane performance

Keywords： Ceramic membrane     Fouling model     Fouling control    

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Fundamental and application of amphiphilic copolymers in high performance MF/UF membranes

Zhu Baoku,Cui Yue,Wang Jun,Wang Nachuan, Yao Zhikan,Zhu Liping

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 87-93

Abstract: /UF) membranes with lower production cost， the amphiphilic copolymers and their corresponding blend membranefound that， during the phase inversion process， amphiphilic copolymer migrated spontaneously to the membraneThis hydrophilic layer provided the membranes with improved hydrophilicity and fouling resistance.

Keywords： amphiphilic copolymers     blend porous membrane     surface enrichment     hydrophilicity     anti-fouling    

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Metal cation removal by P(VC-r-AA) copolymer ultrafiltration membranes

Nachuan Wang, Jun Wang, Peng Zhang, Wenbin Wang, Chuangchao Sun, Ling Xiao, Chen Chen, Bin Zhao, Qingran Kong, Baoku Zhu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 262-272 doi: 10.1007/s11705-017-1682-7

Abstract: Enriching degree of AA segments in surface layer was 2 for copolymer membrane.In addition, the introduction of AA segments made the membrane electronegative and hydrophilic so thatthe membrane was sensitive to the solution pH.The fouling resistance, adsorption of Cu(II), Cr(III) and Ce(IV) ions and the desorption properties ofThe copolymer membranes exhibited good antifouling performance with a fouling reversibility of 92%.

Keywords： poly(vinyl chloride-r-acrylic acid)     negatively charged PVC membrane     anti-fouling     heavy metal adsorption    

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A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1729-6

Abstract:

● Fundamentals of membrane fouling are comprehensively reviewed.

Keywords： Membrane fouling     Thermodynamic mechanism     XDLVO theory     Flory-Huggins theory     Fouling migration    

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Membrane fouling control by ultrasound in an anaerobic membrane bioreactor

SUI Pengzhe, WEN Xianghua, HUANG Xia

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 362-367 doi: 10.1007/s11783-007-0062-9

Abstract: In this study, ultrasound was used to control the membrane fouling online in an anaerobic membrane bioreactorThe experimental results indicated that when the crossflow velocity was more than 1.0 m/s, membrane foulingWhen ultrasound was applied, an ultrasonic power range of 60–150 W was suitable for the membrane foulingThe experimental results showed that the membrane fouling was controlled so well that membrane filtration

Keywords： membrane filtration     filtration resistance     different     feasible ultrasonic     anaerobic membrane    

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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-massfouling occurs; when exceeds 1.2 bar, cake layer pollution aggravates.Through regression analysis, the fouling of polysulfone ultrafiltration membrane could be fitted very

Keywords： membrane fouling     ultrafiltration membrane     coal gasification wastewater     rejection coefficient    

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Enhanced cross-flow filtration with flat-sheet ceramic membranes by titanium-based coagulation for membranefouling control

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1531-x

Abstract:

• Ceramic membrane filtration showed high performance for surface water

Keywords： Ceramic membrane     Coagulation     Polytitanium chloride     Membrane fouling    

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Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0855-9

Abstract: pH values of the BSA solution significantly impact the process of membrane fouling.XDLVO theory shows the polar or Lewis acid–base interaction plays a major role in membrane fouling.To further determine the fouling behavior of bovine serum albumin (BSA) on different hydrophilic PVDFPVA membranes was similar to that between BSA–BSA-fouled PVDF/PVP membranes, which indicated that the foulingmembrane fouling by changing the AB component of free energy.

Keywords： PVDF membrane     Membrane fouling     Adhesion force     Protein     Interfacial free energy    

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Relationship between sludge settleability and membrane fouling in a membrane bioreactor

SUN Yujiao, WANG Yong, HUANG Xia

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 221-225 doi: 10.1007/s11783-007-0038-9

Abstract: The evolution of activated sludge settleability and its relationship to membrane fouling in a submergedmembrane bioreactor were studied at a lab-scale equipment fed with synthetic wastewater.period was shortened, and the two stages (smooth stage and accelerating stage) of the trans-membraneAt the same time, the increasing rate of trans-membrane pressure at the smooth stage decreased and thethickness of the cake layer on the membrane.

Keywords： Influence     bioreactor     activated     filamentous     lab-scale equipment    

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Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobicceramic membrane bioreactor

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 4, doi: 10.1007/s11783-019-1131-6

Abstract: itemcontent>

The existence of three-phase separator aggravated membranefouling rate of EAnCMBR.

Keywords： Anaerobic membrane bioreactor     Three-phase separator     Membrane fouling     Methane leakage     Sludge property    

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Effect of chemical dose on phosphorus removal and membrane fouling control in a UCT-MBR

Guangrong Sun, Chuanyi Zhang, Wei Li, Limei Yuan, Shilong He, Liping Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1085-8

Abstract: In this study, the performance of aluminum sulfate dosing in a University of Cape Town Membrane Bioreactorfouling.The membrane fouling was alleviated attributed to the increased average particle sizes and the decreasedaccumulation of the small sludge particles on membrane surface.surface, resulting in the mitigation of membrane fouling directly.

Keywords： Town Bioreactor (UCT-MBR)     enhanced nutrients removal     aluminum sulfate     sludge activity     membranefouling    

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A review on the forward osmosis applications and fouling control strategies for wastewater treatment

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 661-680 doi: 10.1007/s11705-021-2084-4

Abstract: However, membrane fouling is still a critical issue, which affects water flux stability, membrane lifeDifferent membrane fouling types and corresponding fouling mechanisms, including organic fouling, inorganicfouling, biofouling and combined fouling are therefore further discussed.The fouling control strategies including feed pre-treatment, operation condition optimization, membraneselection and modification, membrane cleaning and tailoring the chemistry of draw solution are also

Keywords： forward osmosis     wastewater treatment     membrane fouling     fouling control    

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Title Author Date Type Operation

Enhanced permeability and biofouling mitigation of forward osmosis membranes via grafting graphene quantum dots

Journal Article

Progress ofanti-fouling reverse osmosis/nanofiltration membrane

Qin Jiaxu,Zhang Lin,Hou Li´an

Journal Article

Preparation and characterization of poly (vinylidene fluoride)/TiO

Weiying LI, Xiuli SUN, Chen WEN, Hui LU, Zhiwei WANG

Journal Article

Ceramic membrane fouling mechanisms and control for water treatment

Journal Article

Fundamental and application of amphiphilic copolymers in high performance MF/UF membranes

Zhu Baoku,Cui Yue,Wang Jun,Wang Nachuan, Yao Zhikan,Zhu Liping

Journal Article

Metal cation removal by P(VC-r-AA) copolymer ultrafiltration membranes

Nachuan Wang, Jun Wang, Peng Zhang, Wenbin Wang, Chuangchao Sun, Ling Xiao, Chen Chen, Bin Zhao, Qingran Kong, Baoku Zhu

Journal Article

A critical review on thermodynamic mechanisms of membrane fouling in membrane-based water treatment process

Journal Article

Membrane fouling control by ultrasound in an anaerobic membrane bioreactor

SUI Pengzhe, WEN Xianghua, HUANG Xia

Journal Article

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

Xue Zou,Jin Li

Journal Article

Enhanced cross-flow filtration with flat-sheet ceramic membranes by titanium-based coagulation for membranefouling control

Journal Article

Effect of protein on PVDF ultrafiltration membrane fouling behavior under different pH conditions: interface

Xudong WANG,Miao ZHOU,Xiaorong MENG,Lei WANG,Danxi HUANG

Journal Article

Relationship between sludge settleability and membrane fouling in a membrane bioreactor

SUN Yujiao, WANG Yong, HUANG Xia

Journal Article

Aggravation of membrane fouling and methane leakage by a three-phase separator in an external anaerobicceramic membrane bioreactor

Chao Pang, Chunhua He, Zhenhu Hu, Shoujun Yuan, Wei Wang

Journal Article

Effect of chemical dose on phosphorus removal and membrane fouling control in a UCT-MBR

Guangrong Sun, Chuanyi Zhang, Wei Li, Limei Yuan, Shilong He, Liping Wang

Journal Article

A review on the forward osmosis applications and fouling control strategies for wastewater treatment

Journal Article