Particle deposition on the patterned membrane surface: Simulation and experiments

Jung, Sung-Cherl; Won, Young-June; Jang, Jun Hee; Yoo, Jae Hyun; Ahn, Kyung Hyun; Lee, Chung‐Hak

doi:10.1016/j.desal.2015.05.014

Cited by 59 publications

(34 citation statements)

References 23 publications

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“…The effect of the surface pattern on the SID can be A c c e p t e d M a n u s c r i p t 16 vicinity of the membrane surface. [63,66] Despite the fact that the nominal wall shear rate ( ̇ ) would be identical for membranes at the same crossflow velocity, the effective shear rate at the membrane surface can be enhanced by slip flow or local vorticity.…”

Section: Colloidal Fouling Of Patterned Uf Membranesmentioning

confidence: 98%

“…imparting periodic surface topography (with a size scale ranging from 0.2 m to 400 m) directly onto separation membranes, has attracted significant interest. [54][55][56][57][58][59][60][61][62][63][64][65][66] Surface-patterned microfiltration (MF), UF, and even nanofiltration (NF) and reverse osmosis (RO) membranes have all been described in the abovecited references. Meaningful improvements in antifouling performance were observed for a polymer solution is deposited onto a patterned mold, and then phase-separated upon temperature change or immersion in a poor solvent.…”

Section: Introductionmentioning

confidence: 99%

“…Membranes fabricated using PSM with feature sizes ranging from tens to hundreds of m were found to display enhanced antifouling properties against microbials [63] and colloid suspensions. [65,66] However, fundamental understanding of the phase inversion process under confinement currently is unclear. Most critically, the contact between the PDMS mold and the phase-separating solutions adds an additional variable in controlling the surface-pore morphology.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface patterning of polymeric membranes and its effect on antifouling characteristics

Ding

Maruf

Aghajani

et al. 2016

Separation Science and Technology

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Surface roughness of membranes is often perceived by many as a factor that promotes fouling during filtration, and thus is undesirable. Almost all liquid-based separation membranes display flat surfaces with intrinsic surface roughness that is associated with the membrane manufacturing process. Recently, polymer ultrafiltration (UF) and thin film composite (TFC) membranes containing regular, periodic surface patterns were fabricated using cost-effective lithographic methods. Here, we review the work to-date on the fabrication and characterization of these patterned membranes with a focus on processing-structure-performance relationships.In addition, the antifouling performance of these membranes against model foulants including colloidal suspensions and protein solutions are also highlighted.

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Section: Colloidal Fouling Of Patterned Uf Membranesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface patterning of polymeric membranes and its effect on antifouling characteristics

Ding

Maruf

Aghajani

et al. 2016

Separation Science and Technology

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“…Considerable research based on numerical simulation methods has been conducted. The numerical simulations can be divided into several types, such as the particle quasi‐fluid method, CFD‐DEM method (including LBM‐DEM, LES‐DEM, and DNS‐IB), particle tracking method, and Brownian dynamics simulation . The existing studies demonstrated that the numerical simulation is an effective means to study the particulate suspensions transport and permeability damage to the porous media.…”

Section: Introductionmentioning

confidence: 99%

“…The numerical simulations can be divided into several types, such as the particle quasi-fluid method, CFD-DEM method (including LBM-DEM, LES-DEM, and DNS-IB), particle tracking method, and Brownian dynamics simulation. [12][13][14][15][16][17][18] The existing studies demonstrated that the numerical simulation is an effective means to study the particulate suspensions transport and permeability damage to the porous media. The particle size-exclusion mechanism in a smooth fracture with a constrict has been extensively studied, and the general conclusion of these studies is that mechanical bridging is more prone to occur when the particle size is larger than one-third of the fracture width.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of particulate suspension transport and permeability impairment in an actual rough fracture under normal stresses

Bin

Tang

Zhao

et al. 2019

Energy Science & Engineering

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The transportation and capture of particulate suspension in a rough fracture are widely encountered in hydrocarbon exploitation. According to a full review of the literature, traditional studies mainly focus on the placement and settlement of coarse particles such as proppants and lost circulation materials. Furthermore, a fracture is often considered to be equivalent to smooth parallel plates, whereas actual fractures are roughly walled with microconvex and are affected by normal stresses. The particulate suspension transport mechanism in a fracture under different normal stresses is still unclear. This paper proposes an approach to evaluate the permeability impairment caused by size‐exclusion of solid particles in a fracture under different normal stresses. The morphology of fracture flow space under different normal stresses is obtained by using optical scanning and FEM. Furthermore, the unresolved CFD‐DEM method is used to study the mechanism of the capture and migration of the particulate suspension in a fracture. The simulation results are in agreement with the experimental results. Furthermore, the effects of the particle size, particle concentration, injected particle volume, fracture occurrence, and applied pressure on particle invasion are discussed.

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Membrane Fouling: Microscopic Insights into the Effects of Surface Chemistry and Roughness

Wang

Jiang

2021

Advcd Theory and Sims

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Fouling is a major obstacle and challenge in membrane‐based separation processes. Caused by the sophisticated interactions between foulant and membrane surface, fouling strongly depends on membrane surface chemistry and roughness. Current studies in the field have been largely focused on polymer membranes. Herein, a molecular dynamics simulation study is reported for fouling on alumina and graphene membrane surfaces during water treatment. For two foulants (sucralose and bisphenol A), it is found that the fouling on alumina surfaces is reduced with increasing surface roughness; however, the fouling on graphene surfaces is enhanced by roughness. It is unravelled that the foulant–surface interaction becomes weaker in the ridge region of a rough alumina surface, thus allowing foulant to leave the surface and reducing fouling. Nevertheless, such behavior is not observed on a rough graphene surface because of strong foulant–graphene interaction. In addition, with increasing roughness, the hydrogen bonds between water and alumina surface are found to increase in number as well as stability. This simulation study reveals that surface chemistry and roughness play a crucial role in membrane fouling, and the microscopic insights are useful for the design of new membranes toward high‐performance water treatment.

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Particle deposition on the patterned membrane surface: Simulation and experiments

Cited by 59 publications

References 23 publications

Surface patterning of polymeric membranes and its effect on antifouling characteristics

Surface patterning of polymeric membranes and its effect on antifouling characteristics

Numerical simulation of particulate suspension transport and permeability impairment in an actual rough fracture under normal stresses

Membrane Fouling: Microscopic Insights into the Effects of Surface Chemistry and Roughness

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