Mitigating membrane fouling by coupling coagulation and the electrokinetic effect in a novel electrocoagulation membrane cathode reactor

Yu, Benhai; Sun, Jingqiu; Zhao, Kai; Ma, Fangkai; Sun, Lingkai; Shao, Jie; Tian, Jiayu; Hu, Chengzhi

doi:10.1016/j.watres.2022.118378

Cited by 25 publications

(12 citation statements)

References 29 publications

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“…Barrier layer modification mostly applies to ultrafiltration or RO membranes with the use of TFCs and modifying the barrier layer to incorporate antifouling properties [ 63 , 64 ]. Physical methods may involve the use of a physical barrier, physical movement or abrasion of the membrane surface to reduce fouling [ 11 , 54 , 131 , 132 ]. Electrical disruption is a method that uses electrokinetic behavior of materials or causes convection disruption close to the surface of the membrane, preventing fouling [ 11 , 133 ].…”

Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

“…Physical methods may involve the use of a physical barrier, physical movement or abrasion of the membrane surface to reduce fouling [ 11 , 54 , 131 , 132 ]. Electrical disruption is a method that uses electrokinetic behavior of materials or causes convection disruption close to the surface of the membrane, preventing fouling [ 11 , 133 ].…”

Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

“…The principle behind the electrokinetic anti-fouling method is that the alternating electric field causes a turbulent Debye’s double layer that prevents the accumulation of foulants. Furthermore, there is an electro-osmotic force that drives solution flux which further improves transmembrane flux rate [ 11 , 131 , 133 ]. Li et al [ 131 ] described such a method, with a graphene/polyaniline (PANI) coated polyester filter cloth ( Figure 12 ).…”

Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

“…Membrane performance is evaluated based on transmembrane flux rates, retention/rejection efficiency and long-term stability. One of the main limitations of filters is their rapid fouling [ 11 , 12 , 13 , 14 , 15 , 16 ], thus a large focus of recent research is aimed at fabricating filters with anti-fouling properties, improving their long-term stability. A related focus is on fabricating filter membranes with specific rejection/retention, which will allow the removal or concentration of undesirables/desirables.…”

Section: Introductionmentioning

confidence: 99%

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Polymeric Materials and Microfabrication Techniques for Liquid Filtration Membranes

2022

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This review surveys and summarizes the materials and methods used to make liquid filtration membranes. Examples of each method including phase inversion, electrospinning, interfacial polymerization, thin film composites, stretching, lithography and templating techniques, are given and the pros and cons of each method are discussed. Trends of recent literature are also discussed and their potential direction is deliberated. Furthermore, the polymeric materials used in the fabrication process of liquid filtration membranes are also reviewed and trends and similarities are shown and discussed. Thin film composites and selective filtration applications appear to be a growing area of research for membrane technology. Other than the required mechanical properties (tensile strength, toughness and chemical and thermal stability), it becomes apparent that polymer solubility and hydropathy are key factors in determining their applicability for use as a membrane material.

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Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

Section: Membrane Modification For Antifouling and Specificitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polymeric Materials and Microfabrication Techniques for Liquid Filtration Membranes

2022

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“…15 The cathodic PPy-based EM can repel the adsorption/deposition of negatively charged colloids and particles such as Escherichia coli cells and extracellular polymeric substances (EPSs) using a chemical-free method. 16,17 However, long-range electro-forces (e.g., electrostatic force) were unable to prevent the colonization of the surface by bacteria. 18 Once the foulants inevitably adhered to the EM surface, the electrorepulsion effect was invalid.…”

Section: Introductionmentioning

confidence: 99%

Maintaining Antibacterial Activity against Biofouling Using a Quaternary Ammonium Membrane Coupling with Electrorepulsion

Sun

Zhang

et al. 2023

Environ. Sci. Technol.

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Antibacterial modification is a chemical-free method to mitigate biofouling, but surface accumulation of bacteria shields antibacterial groups and presents a significant challenge in persistently preventing membrane biofouling. Herein, a great synergistic effect of electrorepulsion and quaternary ammonium (QA) inactivation on maintaining antibacterial activity against biofouling has been investigated using an electrically conductive QA membrane (eQAM), which was fabricated by polymerization of pyrrole with QA compounds. The electrokinetic force between negatively charged Escherichia coli and cathodic eQAM prevented E. coli cells from reaching the membrane surface. More importantly, cathodic eQAM accelerated the detachment of cells from the eQAM surface, particularly for dead cells whose adhesion capacity was impaired by inactivation. The number of dead cells on the eQAM surface was declined by 81.2% while the number of live cells only decreased by 49.9%. Characterization of bacteria accumulation onto the membrane surface using an electrochemical quartz crystal microbalance revealed that the electrorepulsion accounted for the cell detachment rather than inactivation. In addition, QA inactivation mainly contributed to minimizing the cell adhesion capacity. Consequently, the membrane fouling was significantly declined, and the final normalized water flux was promoted higher than 20% with the synergistic effect of electrorepulsion and QA inactivation. This work provides a unique long-lasting strategy to mitigate membrane biofouling.

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A systematic review of electrocoagulation technology applied for microplastics removal in aquatic environment

Liu

Zhang

et al. 2023

Chemical Engineering Journal

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Mitigating membrane fouling by coupling coagulation and the electrokinetic effect in a novel electrocoagulation membrane cathode reactor

Cited by 25 publications

References 29 publications

Polymeric Materials and Microfabrication Techniques for Liquid Filtration Membranes

Polymeric Materials and Microfabrication Techniques for Liquid Filtration Membranes

Maintaining Antibacterial Activity against Biofouling Using a Quaternary Ammonium Membrane Coupling with Electrorepulsion

A systematic review of electrocoagulation technology applied for microplastics removal in aquatic environment

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