Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), 283, Goyang-Daero, Ilsanseo-Gu, Goyang-Si, Gyeonggi-Do, 10223, Republic of Korea.
Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology (KICT), 283, Goyang-Daero, Ilsanseo-Gu, Goyang-Si, Gyeonggi-Do, 10223, Republic of Korea.
Chemosphere. 2024 Jan;346:140555. doi: 10.1016/j.chemosphere.2023.140555. Epub 2023 Oct 28.
Membrane fouling, a major problem in membrane-based processes, decreases the water permeability of a membrane. Membrane fouling can be mitigated either by the application of an additional process for membrane cleaning and pretreatment or by fabricating and modifying membranes to achieve low surface interaction forces. This study aimed to improve the fouling resistance of a commercially available membrane by modifying it with a UV-cured photopolymer, MINs, to achieve low surface energy. The morphological variations (thickness and pore size distribution) of the coating layer were most affected by the viscosity of the UV-cured photopolymer. The thickness of the coating layer was inversely proportional to the dilution factor of the MINs. The pore size distribution could be adjusted by surface modification, and the smallest pore size range (0.077-0.078 μm) was observed for the MC5 membrane. In addition, the pore size distribution, surface roughness, and zeta potential of the membrane decreased after the surface modification. Thus, the developed surface modification strategy has potential for improving the fouling resistance of commercially available microfiltration membranes.
膜污染是膜基过程中的一个主要问题，会降低膜的水透过率。膜污染可以通过额外的膜清洗和预处理工艺来减轻，或者通过制造和改性膜来实现低表面相互作用力。本研究旨在通过用 MINs（一种经紫外线固化的光聚合物）对市售膜进行改性来提高其抗污染性，以达到低表面能的目的。涂层的形态变化（厚度和孔径分布）受紫外线固化光聚合物的粘度影响最大。涂层的厚度与 MINs 的稀释因子成反比。可以通过表面改性来调节孔径分布，对于 MC5 膜，观察到最小的孔径范围（0.077-0.078μm）。此外，膜的孔径分布、表面粗糙度和zeta 电位在表面改性后降低。因此，所开发的表面改性策略有可能改善市售微滤膜的抗污染性。
