School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China.
Water Sci Technol. 2013;67(7):1519-24. doi: 10.2166/wst.2013.023.
In this study, a three-bore polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with antibacterial properties was prepared by phase inversion, using PES as the membrane material, N,N-dimethylacetamide (DMAC) as solvent, polyvinylpyrrolidone (PVP) and AgNO3 as additives. The silver particles were detected by X-ray photoelectron spectroscopy. The effect of AgNO3 content on the antibacterial properties and separation performance was studied in detail. The membranes showed good antibacterial activity against Escherichia coli after adding AgNO3 and the antibacterial rate of PES/AgNO3 UF membrane with AgNO3 content of 1 wt% could reach 99.9% after running for 48 hours. Moreover, the bovine serum albumin solution filtration results indicated that the PES/AgNO3 membranes had a certain degree of antifouling performance. Therefore, three-bore PES/AgNO3 membranes have a potential application to reduce both bacterial and organic fouling in water treatment.
在这项研究中，通过相转化法制备了一种具有抗菌性能的三孔聚醚砜（PES）中空纤维超滤（UF）膜，以 PES 为膜材料，N，N-二甲基乙酰胺（DMAC）为溶剂，聚乙烯吡咯烷酮（PVP）和 AgNO3 为添加剂。通过 X 射线光电子能谱法检测到了银颗粒。详细研究了 AgNO3 含量对膜分离性能和抗菌性能的影响。添加 AgNO3 后，膜对大肠杆菌表现出良好的抗菌活性，AgNO3 含量为 1wt%的 PES/AgNO3 UF 膜在运行 48 小时后抗菌率可达 99.9%。此外，牛血清白蛋白溶液过滤结果表明，PES/AgNO3 膜具有一定的抗污染性能。因此，三孔 PES/AgNO3 膜在减少水处理过程中的细菌和有机污染方面具有潜在的应用前景。
