Anti-fouling and anti-wetting membranes for membrane distillation

Kalla, Sarita; Piash, KmProttoy Shariar; Sanyal, Oishi

doi:10.1016/j.jwpe.2022.102634

Cited by 19 publications

(8 citation statements)

References 171 publications

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“…Electrospinning produces continuous polymer nanofibers with reasonable mechanical strengths, [ 80 , 81 , 82 ]. The nanofiber diameters typically range from nano to micrometers [ 81 , 82 ].…”

Section: Modification Strategies Of Fo Membrane Substrates With ...mentioning

confidence: 99%

Design Strategies for Forward Osmosis Membrane Substrates with Low Structural Parameters—A Review

Piash

Sanyal

2023

Membranes

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This article reviews the many innovative strategies that have been developed to specifically design the support layers of forward osmosis (FO) membranes. Forward osmosis (FO) is one of the most viable separation technologies to treat hypersaline wastewater, but its successful deployment requires the development of new membrane materials beyond existing desalination membranes. Specifically, designing the FO membrane support layers requires new engineering techniques to minimize the internal concentration polarization (ICP) effects encountered in cases of FO. In this paper, we have reviewed several such techniques developed by different research groups and summarized the membrane transport properties corresponding to each approach. An important transport parameter that helps to compare the various approaches is the so-called structural parameter (-value); a low -value typically corresponds to low ICP. Strategies such as electrospinning, solvent casting, and hollow fiber spinning, have been developed by prior researchers—all of them aimed at lowering this -value. We also reviewed the quantitative methods described in the literature, to evaluate the separation properties of FO membranes. Lastly, we have highlighted some key research gaps, and provided suggestions for potential strategies that researchers could adopt to enable easy comparison of FO membranes.

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Section: Modification Strategies Of Fo Membrane Substrates With ...mentioning

confidence: 99%

Design Strategies for Forward Osmosis Membrane Substrates with Low Structural Parameters—A Review

Piash

Sanyal

2023

Membranes

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“…The fouling-prone nature of the MD membranes can be improved by a variety of nanomaterials. Nanoparticles are promising materials that are utilized for MD membrane fabrications and modifications [28]. Functionalization of the membranes is achieved by adding a variety of nanoparticles (NPs) that form a superhydrophobic surface.…”

Section: Introductionmentioning

confidence: 99%

Nanomaterial‐Incorporated Membrane Distillation Membranes: Characteristics, Fabrication Techniques, and Applications

2023

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Membrane distillation (MD), a temperature‐driven membrane separation process, is used for various applications due to its less complicated design. MD operations encounter major issues such as permeate flux decrease, membrane fouling, and wetting. A lot of research has been conducted in the past years on the modification of MD membranes by incorporating nanomaterials to overcome these obstacles and considerably increase their performance. Nanomaterials incorporated into the membranes improve the water permeability, mechanical strength, and fouling. The incorporation of next‐generation nanomaterials like metal oxide nanoparticles, carbon‐based nanomaterials, graphene‐based membranes, quantum dots, and metal‐organic frameworks in the MD membranes is investigated. Essential membrane properties for MD operations are comprehensively studied, including higher liquid entry pressure, permeability, porosity, hydrophobicity, thermal stability, mean pore size, and low fouling rate. Significant advances in the application of nanomaterials to the modification of MD membranes as well as other membrane fabrication techniques adopted for the incorporation of nanoparticles like surface grafting, interfacial polymerization, plasma polymerization, and dip coating are reviewed. Important future aspects are discussed.

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“…Membrane fouling is also a significant drawback in the wide‐ranging applications of ceramic membranes. Fouling refers to the accumulation of unwanted deposits, such as salts and inorganic and organic particles, on the membrane surface and inner pores, resulting in poor performance of ceramic membranes 22,23 . Various operational parameters significantly affect the buildup of foulants on the ceramic membrane surface, including the properties of foulants, feed properties, ceramic membrane properties, and operating conditions 24 .…”

Section: Introductionmentioning

confidence: 99%

“…Fouling refers to the accumulation of unwanted deposits, such as salts and inorganic and organic particles, on the membrane surface and inner pores, resulting in poor performance of ceramic membranes. 22,23 Various operational parameters significantly affect the buildup of foulants on the ceramic membrane surface, including the properties of foulants, feed properties, ceramic membrane properties, and operating conditions. 24 These properties usually determine the type of fouling on the surface of the ceramic membrane and the rate of fouling accumulation.…”

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“…10 Fouling on the ceramic membrane has generally been classified into four types: organic fouling, inorganic (scaling) fouling, biofouling (microbial), and colloidal (particle) fouling. 22 Organic fouling includes polysaccharides, proteins, polyoxy aromatics, and amino sugars. Inorganic (scaling) fouling is caused by inorganic residues, such as metal hydroxides, on the ceramic membrane surface or inside pore structures.…”

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confidence: 99%

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Recent progress and technical improvement strategies for mitigating ceramic membrane bottlenecks in water purification processes: A review

Omar

Othman

Tai

et al. 2023

Int J Applied Ceramic Tech

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Ceramic membranes offer considerable promise for future industrial applications due to their superior chemical, mechanical, and thermal stabilities, resistance to harsh operating conditions, and long‐term operating processes. However, several bottlenecks still limit their commercial scale‐up in filtration and separation applications, including brittleness, the high costs of conventional ceramic materials, and fouling. Despite several articles in the literature on ceramic membranes, this review focuses on recent progress, technical strategies, and methods to mitigate these limitations that significantly impact their separation and filtration performance. The use of alternative naturally occurring ceramic materials to mitigate the high costs of conventional ceramic materials is discussed, as well as strategies to improve the mechanical strength of brittle ceramic membranes by increasing sintering temperatures and using support materials. Additionally, advanced techniques to mitigate fouling accumulation and wetting in the pores and on the ceramic membrane surface, such as increasing membrane hydrophilicity and surface modification, are addressed. Despite progress in technical solutions for mitigating the bottlenecks of ceramic membranes, these limitations persist. Therefore, the present limitations and future research directions are highlighted.

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Anti-fouling and anti-wetting membranes for membrane distillation

Cited by 19 publications

References 171 publications

Design Strategies for Forward Osmosis Membrane Substrates with Low Structural Parameters—A Review

Design Strategies for Forward Osmosis Membrane Substrates with Low Structural Parameters—A Review

Nanomaterial‐Incorporated Membrane Distillation Membranes: Characteristics, Fabrication Techniques, and Applications

Recent progress and technical improvement strategies for mitigating ceramic membrane bottlenecks in water purification processes: A review

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