Enhanced performance of superhydrophobic polyvinylidene fluoride membrane with sandpaper texture for highly saline water desalination in air-gap membrane distillation

Azeem, M.A.; Lawal, Dahiru U.; Abdulgader, Hasan Al; Baroud, Turki N.

doi:10.1016/j.desal.2022.115603

Cited by 20 publications

(4 citation statements)

References 32 publications

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“…PDMS-based textured membrane demonstrated excellent MD performance with high and sustained salt rejection at 99.99%, and permeate flux exceeding 21 kg m 2 h during a 40-hour test using very saline water (70 g/l NaCl) in air-gap membrane distillation (AGMD). Significantly, the PVDF membranes produced in this work demonstrated higher permeate flux over time as a result of a narrowing of the air gap caused by membrane stretching [33].…”

Section: Desalinationmentioning

confidence: 82%

Biomimetic Superhydrophobic Materials for Environmental Applications

Viet Ha Tran,

Viet Nguyen,

Minh Tri Nguyen

2023

Nature-Inspired Self-Cleaning Surfaces in the Nanotechnology Era

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Environmental pollution has been one of the people’s most significant concerns for decades. In today’s industrialized and modernized society, the problem of environmental pollution has become more and more serious, directly affecting the sustainable development of each country. The unique surface properties of materials and interfaces produced by biomimetic approaches can be leveraged to create practical solutions to challenging environmental issues. Among them, superhydrophobic materials get a lot of attention because of their exceptional capacities in various environmental applications such as oil-water separation, membrane-based water purification and desalination, biofouling prevention, high-performance vapor condensation, and atmospheric water capture. This chapter reviews and discusses the fundamental principles of superhydrophobicity, recent works in preparing superhydrophobic surfaces, their potential environmental applications, and the challenges confronted in their new applications.

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Section: Desalinationmentioning

confidence: 82%

Biomimetic Superhydrophobic Materials for Environmental Applications

Viet Ha Tran,

Viet Nguyen,

Minh Tri Nguyen

2023

Nature-Inspired Self-Cleaning Surfaces in the Nanotechnology Era

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“…168,169 Compared with the two above-mentioned membranes, PVDF is superior for the preparation of superhydrophobic materials due to its unique chemical properties and easy modification. Azeem et al 170 reported a method for designing superhydrophobic PVDF membranes by casting sandpaper textures and performing phase conversion on PDMS templates. The superhydrophobic PVDF membrane had superior scale-prevention and desalination properties.…”

Section: Applications Of Efsms In the Fields Of Environment Energy An...mentioning

confidence: 99%

Research progress on eco-friendly superhydrophobic materials in environment, energy and biology

peng

Zhang

et al. 2022

Chem. Commun.

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“…However, the water contact angle (WCA) and liquid entry pressure (LEP) affect the MD flux and operating time as well as membrane wetting differently. DCMD fluxes increased and the operation extended when WCA and LEP of the modified membranes increased [42,[45][46][47][48][49][50]. On a contrary, AGMD flux increased when WCA decreased for the membrane fabricated from PVDF dope solution blended with activated carbon [51].…”

Section: Phase Inversion Membranesmentioning

confidence: 99%

Evolution of Membrane Surface Properties for Membrane Distillation: A Mini Review

Chiam

Sarbatly²

2022

AMST

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To date, the membrane development for membrane distillation (MD) application is growing in line with the increasing volume of various types of wastewaters discharged into environment. MD is a liquid-vapor separation process and a hydrophobic membrane is used to retain the liquid. Theoretically, the hydrophobic membrane can achieve 100% rejection of non-volatile components that dissolved in feed liquids. As a result, MD has received significant attention in water recovery from saline water as well as wastewaters. Nevertheless, in addition to the scaling problem due to salts, the hydrophobicity property of membrane becomes a concern when dealing with challenging wastewaters which contain various types of low surface tension components such as oils, grease, alcohols, organics and surfactants. The membrane pore wetting due to salts deposition fouling and low surface tension components subsequently reduces the flux and even fails the liquid-vapor separation process. This article briefly discusses the transformation of MD membrane from hydrophobic to superhydrophobic and omniphobic which purposely to enhance the flux and eliminate the membrane pore wetting.

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Enhanced performance of superhydrophobic polyvinylidene fluoride membrane with sandpaper texture for highly saline water desalination in air-gap membrane distillation

Cited by 20 publications

References 32 publications

Biomimetic Superhydrophobic Materials for Environmental Applications

Biomimetic Superhydrophobic Materials for Environmental Applications

Research progress on eco-friendly superhydrophobic materials in environment, energy and biology

Evolution of Membrane Surface Properties for Membrane Distillation: A Mini Review

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