Department of Chemical Engineering, Lakehead University, Thunder Bay, Ontario, Canada.
Biofouling. 2023 Aug-Sep;39(8):879-895. doi: 10.1080/08927014.2023.2280005. Epub 2023 Nov 20.
In this study, the effects of surface properties of membrane materials on microalgae cell adhesion and biofilm formation were investigated using and five different types of membrane materials under hydrodynamic conditions. The results suggest that the contact angle (hydrophobicity), surface free energy, and free energy of cohesion of membrane materials alone could not sufficiently elucidate the selectivity of microalgae cell adhesion and biofilm formation on membrane materials surfaces, and membrane surface roughness played a dominant role in controlling biofilm formation rate, under tested hydrodynamic conditions. A lower level of biofilm EPS production was generally associated with a larger amount of biofilm formation. The zeta potential of membrane materials could enhance initial microalgae cell adhesion and biofilm formation through salt bridging or charge neutralization mechanisms.
在这项研究中，使用 和五种不同类型的膜材料在水动力条件下，研究了膜材料表面特性对微藻细胞粘附和生物膜形成的影响。结果表明，接触角（疏水性）、表面自由能和膜材料的内聚自由能单独使用并不能充分说明微藻细胞在膜材料表面的粘附和生物膜形成的选择性，而膜表面粗糙度在控制生物膜形成速率方面起着主导作用，在测试的水动力条件下。一般来说，生物膜 EPS 产量越低，生物膜形成量越大。膜材料的动电电位可以通过盐桥或电荷中和机制增强初始微藻细胞的粘附和生物膜的形成。
