High‐Pressure Jet Cleaning of Polymeric Microfiltration Membranes

Lam, Zihim; Anlauf, Harald; Nirschl, Hermann

doi:10.1002/ceat.201900449

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…This method was restored about 80% of the initial throughput of the membrane. Higher pressure and a longer cleaning duration are supported by a higher throughput of the membrane [38] Polymers 2021, 13, 846 5 of 25 Table 3. Cont.…”

Section: Processmentioning

confidence: 99%

“…Some other factors are also important, such as pH, ionic strength, and particle electric charges. The charge on the membrane, the charge on the particles, conformation, and stability of, and thus adhesiveness of particles/molecules, as well as the size of the cake, are all influenced by the pH and ionic strength of the feed [ 38 , 42 ].…”

Section: Membrane Foulants and Affecting Factors Of Foulingmentioning

confidence: 99%

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Fouling and Chemical Cleaning of Microfiltration Membranes: A Mini-Review

2021

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Membrane fouling is one of the main drawbacks encountered during the practical application of membrane separation processes. Cleaning of a membrane is important to reduce fouling and improve membrane performance. Accordingly, an effective cleaning method is currently of crucial importance for membrane separation processes in water treatment. To clean the fouling and improve the overall efficiency of membranes, deep research on the cleaning procedures is needed. So far, physical, chemical, or combination techniques have been used for membrane cleaning. In the current work, we critically reviewed the fouling mechanisms affecting factors of fouling such as the size of particle or solute; membrane microstructure; the interactions between membrane, solute, and solvent; and porosity of the membrane and also examined cleaning methods of microfiltration (MF) membranes such as physical cleaning and chemical cleaning. Herein, we mainly focused on the chemical cleaning process. Factors affecting the chemical cleaning performance, including cleaning time, the concentration of chemical cleaning, and temperature of the cleaning process, were discussed in detail. This review is carried out to enable a better understanding of the membrane cleaning process for an effective membrane separation process.

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Section: Processmentioning

confidence: 99%

Section: Membrane Foulants and Affecting Factors Of Foulingmentioning

confidence: 99%

Fouling and Chemical Cleaning of Microfiltration Membranes: A Mini-Review

2021

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“…To address this problem, Lam et al developed a method for continuous high-pressure jet cleaning of polymeric membranes on a vacuum drum filter. More than 80 % of the initial throughput of the membrane could be restored for many filter cycles [23]. An impact on the membrane was only detected after 1800 cleaning cycles at a cleaning pressure of 130 bar with 20 filtration steps between each cleaning cycle.…”

Section: Hermann Nirschlmentioning

confidence: 98%

Thin‐Film Filtration of Difficult‐to‐Filter Suspensions Using Polymeric Membranes

2021

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Fine-grained particle systems build up a highly consolidated and thin layer on the filter medium and cause a high filter cake resistance. The objective of the novel thin-film filtration process is an effective mechanical separation of these particle systems using membranes on a vacuum drum filter. The mechanical stability of the membrane is evaluated since a roller is required for the cake discharge and the filtration performance is compared with that of a commonly used filter cloth. Analyses reveal that the surface porosity is the crucial factor for the mechanical stability of the membrane. Furthermore, the filter cloth shows a higher filter media resistance than the membrane. A significant increase in the specific dry mass throughput and a particle-free filtrate could be achieved.

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“…With the progress of the separation process, increased concentration of retention will lead to membrane fouling problems such as membrane blockage and concentration polarization, thus causing a decrease in the filtered flux [ 17 , 18 , 19 , 20 ]. In this regard, researchers found that increasing the shear force of the membrane surface is an effective method to decrease membrane fouling and increase filtered flux [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

Zhao

Wang

2023

Polymers

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To address the problem of lignin membrane fouling caused by dynamic cross-flow in the process of retaining and concentrating the black liquor byproduct of papermaking, this paper uses three different rotating structures (vane, disk and propeller) to increase the surface shear force and filtration flux of the membrane. In this paper, under different rotating speeds and different transmembrane pressure differences, numerical simulations were conducted on the shear forces generated by the three structures and the retention process on the surface of the membrane. The variation laws were also studied and compared. Under the same filtration conditions, the vane structure demonstrates better results than the propeller and disk structures in terms of increasing filtration flux. Based on the result, the vane shear force was simulated in terms of changing the particle deposition, and compared with vane rotating speeds of 100–700 r/min, the surface particle deposition of the membrane was significantly reduced at a rotating speed of 800 r/min. Finally, the numerical simulation results were experimentally validated to ensure the accuracy of the simulation. The findings provide a theoretical basis and practical value for solving the problem of lignin membrane fouling caused by dynamic cross-flow in the process of retaining and concentrating the black liquor byproduct of papermaking.

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High‐Pressure Jet Cleaning of Polymeric Microfiltration Membranes

Cited by 7 publications

References 21 publications

Fouling and Chemical Cleaning of Microfiltration Membranes: A Mini-Review

Fouling and Chemical Cleaning of Microfiltration Membranes: A Mini-Review

Thin‐Film Filtration of Difficult‐to‐Filter Suspensions Using Polymeric Membranes

Study on Experiment and Simulation of Shear Force on Membrane with Dynamic Cross-Flow for Lignin in Black Liquor

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