Preparation of TiO2 self-assembled polymeric nanocomposite membranes and examination of their fouling mitigation effects in a membrane bioreactor system

✍ Scribed by Tae-Hyun Bae; Tae-Moon Tak

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 311 KB
• Volume: 266
• Category: Article
• ISSN: 0376-7388
• DOI: 10.1016/j.memsci.2005.08.014

✦ Synopsis

In this study, we investigated the ability of TiO 2 self-assembled nanocomposite membranes to mitigate fouling effects during the filtration of membrane bioreactor (MBR) mixed liquor. Our results showed that membrane fouling was significantly reduced by the immobilization of TiO 2 nanoparticles on the surface of these membranes. The fouling mitigation effect increased with increasing amounts of TiO 2 nanoparticles and the initial sharp flux decline observed for neat polymeric membranes was alleviated by TiO 2 immobilization. Adsorbed foulants on the surface of nanocomposite membranes were more readily dislodged by shear force than those on neat polymeric membranes due to the increased hydrophilicity of the membrane. Accordingly, the amount and the rate of membrane fouling decreased in the nanocomposite membranes.