State-of-the-art surface patterned membranes fabrication and applications: A review of the current status and future directions

Zare, Sahar; Kargari, Ali

doi:10.1016/j.cherd.2023.06.049

Cited by 13 publications

(6 citation statements)

References 216 publications

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“…Membranes can also be damaged by incorrect chemical cleaning procedures [ 18 ], and one must consider the negative environmental impacts of chemical use [ 19 ]. At the very least, operational downtime should also be considered a drawback to any traditional cleaning method that requires taking the membrane offline [ 12 ]. Thus, it is advantageous to minimize the need for and frequency of chemical cleanings.…”

Section: Introductionmentioning

confidence: 99%

“…Barambu et al [ 35 ] summarize the approaches used to produce these patterns and the subsequent effect on membrane performance. Chauhan et al [ 36 ], Zare and Kargari [ 12 ], and Ibrahim and Hilal [ 37 ] provide more recent and nearly concurrent review articles.…”

Section: Introductionmentioning

confidence: 99%

“…Although there is extensive documentation that patterned membrane surfaces reduce the thickness and degree of concentration in the concentration polarization layer, surface patterns produce stationary vortices in valleys and cavity-like spaces capable of trapping buoyant particles. It is recognized that the presence of these stagnant zones promotes particle aggregation and induces surface fouling in the pattern valleys [ 8 , 43 , 46 , 51 , 52 ] and can thus result in an overall higher degree of fouling [ 12 ]; the same is true for studies concerning the fouling of membrane channels with spacers. Wang et al [ 51 ] explain that while vortices can create flow separation in pattern valleys and therefore hinder particle deposition along the valley surface, they can also capture foulants.…”

Section: Introductionmentioning

confidence: 99%

“…This type of fouling significantly thwarts the wide-scale adoption of nanofiltration [7] and poses similar operational challenges to the implementation of microporous membranes (i.e., microfiltration and ultrafiltration modules) [4]. The overwhelming consensus is that these phenomena pose the most significant hurdles in the application of pressure-driven membrane processes [8][9][10][11][12].…”

Section: Introduction 1challenges To Membrane Operationmentioning

confidence: 99%

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Inducing Deep Sweeps and Vortex Ejections on Patterned Membrane Surfaces to Mitigate Surface Fouling

Young,

Hotz,

Hawkins

et al. 2024

Membranes

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Patterned membrane surfaces offer a hydrodynamic approach to mitigating concentration polarization and subsequent surface fouling. However, when subjected to steady crossflow conditions, surface patterns promote particle accumulation in the recirculation zones of cavity-like spaces. In order to resolve this issue, we numerically subject a two-dimensional, patterned membrane surface to a rapidly pulsed crossflow. When combined with cavity-like spaces, such as the valleys of membrane surface patterns, a rapidly pulsed flow generates mixing mechanisms (i.e., the deep sweep and the vortex ejection) and disrupts recirculation zones. In only four pulses, we demonstrate the ability of these mechanisms to remove over half of the particles trapped in recirculation zones via massless particle tracking studies (i.e., numerical integration of the simulated velocity field). The results of this work suggest that when combined with a rapidly pulsed inlet flow, patterned membrane surfaces can not only alleviate concentration polarization and the surface fouling that follows but also reduce the need for traditional cleaning methods that require operational downtime and often involve the use of abrasive chemical agents.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introduction 1challenges To Membrane Operationmentioning

confidence: 99%

See 2 more Smart Citations

Inducing Deep Sweeps and Vortex Ejections on Patterned Membrane Surfaces to Mitigate Surface Fouling

Young,

Hotz,

Hawkins

et al. 2024

Membranes

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“…Here, we propose a facile method for preparing patterned membranes for efficient alkaline membrane electrolyzers. Different from current methods of preparing patterned membranes, such as etching with a laser, photolithography, ions, or sacrificial template methods, − we used commercially available large (15 × 15 cm) monocrystalline silicon as a template (Figure A). The pattern on the monocrystalline silicon plate can be easily controlled by adjusting the etching time.…”

mentioning

confidence: 99%

Advanced Patterned Membranes for Efficient Alkaline Membrane Electrolyzers

Hu,

Lee,

et al. 2024

ACS Energy Lett.

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Rational design of membrane electrode assemblies is crucial to the production of high-performance and durable anion exchange membrane (AEM) water electrolyzers (AEMWEs). Here, we propose a facile method to prepare patterned membranes by casting a polymer solution onto the surface of commercially available monocrystalline silicon plates with pyramid-shaped patterns on their surface. The prepared membrane shows a 39% improvement in water permeability and a 23% enhancement in the electrochemical surface area compared with a flat membrane with the same catalyst loading. The patterned AEM achieves an unprecedented current density of 17.5 A cm −2 @2.0 V and mass activity of 26.3 A mg IrO2−1 using a catalyst-coated membrane method. Moreover, the patterned AEM-based AEMWE can be operated at 1.5 A cm −2 and 60 °C for 1000 h with a relatively low voltage decay rate of 22 μV h −1 . These results demonstrate that patterned membranes have promising application capability for the next generation of hydrogenproduction devices.

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Comparative study of anti-scaling performance in membrane distillation: Membrane spacer vs. patterned module vs. patterned membrane

Jeong,

et al. 2024

Chemical Engineering Journal

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State-of-the-art surface patterned membranes fabrication and applications: A review of the current status and future directions

Cited by 13 publications

References 216 publications

Inducing Deep Sweeps and Vortex Ejections on Patterned Membrane Surfaces to Mitigate Surface Fouling

Inducing Deep Sweeps and Vortex Ejections on Patterned Membrane Surfaces to Mitigate Surface Fouling

Advanced Patterned Membranes for Efficient Alkaline Membrane Electrolyzers

Comparative study of anti-scaling performance in membrane distillation: Membrane spacer vs. patterned module vs. patterned membrane

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