以超滤和微滤为核心的低压分离膜技术已广泛应用于废水处理领域,但膜污染问题一直是限制其高效低耗运行的主要瓶颈。聚多巴胺(PDA)作为一种仿生粘附材料,具有优异的亲水性和界面修饰能力,可有效提升低压分离膜的抗污染能力。综述了PDA在低压分离膜亲水化改性中的研究进展,详述了PDA的形成与界面粘附机理,重点介绍了PDA直接沉积改性、PDA共混改性及PDA作为中间层改性等传统改性方法及其优缺点,并介绍了氧化促进PDA沉积等新型改性策略,旨在为PDA改性技术在膜分离领域的推广应用提供指导。
Low-pressure separation membrane technologies centered on ultrafiltration and microfiltration have been widely applied in wastewater treatment processes,but membrane fouling has always been the main bottleneck restricting their efficient and low-cost operation.Polydopamine (PDA),as a bio-inspired adhesive material,can effectively enhance the anti-fouling ability of separation membranes due to its excellent hydrophilicity and interfacial modification capability.This review systematically summarized research progress on the application of PDA for enhancing the hydrophilicity of low-pressure separation membranes,detailing the formation and interfacial adhesion mechanisms of PDA.It focused on the traditional modification methods including PDA direct deposition,PDA blending,and PDA intermediate layer modification,as well as their advantages and disadvantages.Furthermore,novel strategies such as oxidation-accelerated PDA deposition were introduced,aiming to offer valuable insights for the further development and practical application of PDA technology in membrane separation.
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基金资助
中煤科工西安研究院(集团)有限公司科技创新基金(2024XAJS16)
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