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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: In this paper, graphene oxide quantum dots with amino groups (NH2-GOQDs) were tailored to the surface of a thin-film composite (TFC) membrane surface for optimizing forward osmosis (FO) membrane performance using the amide coupling reaction. The results jointly demonstrated hydrophilicity and surface roughness of the membrane enhanced after grafting NH2-GOQDs, leading to the optimized affinity and the contact area between the membrane and water molecules. Therefore, grafting of the membrane with a concentration of 100 ppm (TFC-100) exhibited excellent permeability performance (58.32 L·m–2·h–1) compared with TFC membrane (16.94 L·m–2·h–1). In the evaluation of static antibacterial properties of membranes, TFC-100 membrane destroyed the cell morphology of Escherichia coli (E. coli) and reduced the degree of bacterial adsorption. In the dynamic biofouling experiment, TFC-100 membrane showed a lower flux decline than TFC membrane. After the physical cleaning, the flux of TFC-100 membrane could recover to 96% of the initial flux, which was notably better than that of TFC membrane (63%). Additionally, the extended Derjaguin–Landau–Verwey–Overbeek analysis of the affinity between pollutants and membrane surface verified that NH2-GOQDs alleviates E. coli contamination of membrane. This work highlights the potential applications of NH2-GOQDs for optimizing permeability and biofouling mitigation of FO membranes.

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

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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 carried

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

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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 osmosisIn 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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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: This 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: 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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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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Characterization of electrode fouling during electrochemical oxidation of phenolic pollutant

Xuefeng Liu, Shijie You, Fang Ma, Hao Zhou

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1345-7

Abstract: Abstract • Electrode fouling is characterized by non-destructive characterization. • Electrode foulingElectrode fouling is a problem that commonly occurs during electro-oxidation water purification.This study focused on identifying the fouling behavior of Pt electrode associated with the formationThe results demonstrated that the electrode fouling was highly dependent on thermodynamic process of, but also suggests strategies for anti-fouling in the presence of chloride in electro-oxidation process

Keywords： Electro-oxidation     Electrode fouling     Polymeric film     Chloride ions    

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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: wastewater treatment has drawn great interest, due to its high separation efficiency, low membrane foulingHowever, 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, membrane

Keywords： forward osmosis     wastewater treatment     membrane fouling     fouling control    

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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.growth with feed pressure ( ): when equals 1.2 bar, the mark for the critical flux, slight membrane foulingThrough 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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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: was investigated, in terms of the nutrients removal performance, sludge characteristics and membrane foulingThe membrane fouling was alleviated attributed to the increased average particle sizes and the decreasedsludge liquid decreased its accumulation on membrane surface, resulting in the mitigation of membrane fouling

Keywords： Bioreactor (UCT-MBR)     enhanced nutrients removal     aluminum sulfate     sludge activity     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, the pH values of a BSA solution can have a significant impact on the process of membrane fouling

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

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

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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QUANTITATIVE STUDY ON ANTI-PEST ACTIVITY OF NATURAL PRODUCTS BASED ON VISUALIZATION FRAMEWORK OF KNOWLEDGE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 2,   Pages 306-332 doi: 10.15302/J-FASE-2023488

Abstract:

● Using visual analysis to predict the trend of natural product pest resistance.

Keywords： anti-pest activity     crop protection     insect pest     natural product     visual analysis    

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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

Preparation and characterization of poly (vinylidene fluoride)/TiO

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

Journal Article

Progress ofanti-fouling reverse osmosis/nanofiltration membrane

Qin Jiaxu,Zhang Lin,Hou Li´an

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

Ceramic membrane fouling mechanisms and control for water treatment

Journal Article

Characterization of electrode fouling during electrochemical oxidation of phenolic pollutant

Xuefeng Liu, Shijie You, Fang Ma, Hao Zhou

Journal Article

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

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

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

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

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

Journal Article

QUANTITATIVE STUDY ON ANTI-PEST ACTIVITY OF NATURAL PRODUCTS BASED ON VISUALIZATION FRAMEWORK OF KNOWLEDGE

Journal Article