Institute of Environmental Engineering, Faculty of Environmental Engineering and Geodesy, Wroclaw University of Environmental and Life Sciences, pl. Grunwaldzki 24, 50363, Wrocław, Poland.
Department of Material Science, Welding and Strength of Material, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Smoluchowskiego 25, 50370, Wrocław, Poland.
Sci Rep. 2019 Jan 23;9(1):422. doi: 10.1038/s41598-018-36697-2.
Microfiltration (MF) and ultrafiltration (UF) membranes are capable of rejecting most of particulate and colloidal matter from natural water. The major impediment to their applications is fouling caused by contaminants that accumulate on and/or inside the membrane. Therefore, most membranes are subjected to chemical cleaning procedures as one of the methods to control fouling. Exposure to chemical cleaning agents can reduce the performance and lead to the degradation of polyethersulfone (PES) ultrafiltration membranes. This study was conducted in order to evaluate the effect of cleaning agents on the properties of the PES membranes during exposure to short-term foulant and a cleaning agent. The cleaning agents evaluated were NaOH, HCl and NaOCl. The accelerated static cleaning conditions showed significant changes in PES flat sheet membrane properties in case of cleaning with NaOCl. These changes were analyzed using SEM microscopy, FTIR spectroscopy, contact angle measurement and hydraulic membrane performance evaluation.
微滤 (MF) 和超滤 (UF) 膜能够截留天然水中的大部分颗粒和胶体物质。它们应用的主要障碍是污染物在膜上和/或膜内积聚引起的结垢。因此，大多数膜都需要进行化学清洗程序，这是控制结垢的方法之一。暴露于化学清洗剂会降低聚醚砜 (PES) 超滤膜的性能并导致其降解。本研究旨在评估在短期污染物和清洗剂暴露下清洗剂对 PES 膜性能的影响。评估的清洗剂有 NaOH、HCl 和 NaOCl。加速静态清洗条件表明，用 NaOCl 清洗时，PES 平板膜的性能会发生显著变化。这些变化使用 SEM 显微镜、FTIR 光谱、接触角测量和水力膜性能评估进行了分析。
