Fabrication of a low‐cost nano‐SiO2/PVC composite ultrafiltration membrane and its antifouling performance |
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| Authors: | Zhenjiang Yu Xuyang Liu Fangbo Zhao Xiaoyang Liang Yu Tian |
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| Affiliation: | 1. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin, People's Republic of China;2. Shale Water Research Center, Houston, Texas;3. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, People's Republic of China |
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| Abstract: | A novel low‐cost SiO2/Polyvinylchloride (PVC) membrane with different nano‐SiO2 particles loading (0–4 wt %) was prepared by the phase‐inversion process. The optimum nano‐SiO2 dosage was determined as 1.5 wt % based on the casting solution compositions, the membranes' mechanical properties and hydrophilicities, the pure water fluxes, microstructures, and absorption of protein. Compared with the bare membrane, the membrane with 1.5 wt % nano‐SiO2 addition presented better capabilities against the protein absorption and bacterial attachment, better antifouling performance, and higher flux recovery ratio in filtration of the supernatant liquor which collected from a secondary sedimentation tank in a municipal wastewater plant. The SiO2/PVC membranes have applicable potential in the municipal wastewater treatment for their low price, good antifouling performance and high removal efficiencies of SS (over 97.2%), COD (up to 82.9%) and total bacteria (more than 93.6%). © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41267. |
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| Keywords: | composites hydrophilic polymers membranes nanoparticles separation techniques |
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