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Bionic functional membranes for separation of oil-in-water emulsions

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The separation of oil-in-water emulsion is an urgent challenge because its massive production and discharge from daily and industrial activities have caused severe hazards to the ecosystem and serious threats to human health.Membrane technology is considered an outstanding solution strategy for the separation of oil-in-water emulsions due to its unique advantages of low cost,high efficiency,easy operation,and environmental friendliness.However,the membrane is easily fouled by the emulsion oil droplets during the separation process,causing a sharp decline in permeation flux,which greatly inhibits the long-term use of the membrane and largely shortens the membrane's life.Recently,it was found that endowing the membranes with special wettability e.g.,superhydrophilic and superoleophobic can greatly enhance the permeability of the continuous water phase and inhibit the adhesion of oil droplets,thus promoting the separation performance and anti-oil-fouling property of membrane for oily emulsions.In this paper,we review and discuss the recent developments in membranes with special wettability for separating oil-in-water emulsions,including the mechanism analysis of emulsion separation membrane,membrane fouling issues,design strategies,and representative studies for enhancing the membrane's anti-oil-fouling ability and emulsion separation performance.

bionic surfacemembraneswettabilityoil-in-water emulsionsoil-water separation

Chaolang CHEN、Ruisong JIANG、Zhiguang GUO

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School of Mechanical Engineering,Sichuan University,Chengdu 610065,China

School of Materials Science and Engineering,Hubei University,Wuhan 430062,China

National Natural Science Foundation of ChinaSichuan Science and Technology ProgramFundamental Research Funds for the Central Universities of China and Tribology Science Fund of State Key Laboratory of Tribology

522052112022YFG0283SKLTKF21B12

2024

摩擦(英文)

摩擦(英文)

CSTPCDEI
ISSN:2223-7690
年,卷(期):2024.12(9)