Towards superior permeability and antifouling performance of sulfonated polyethersulfone ultrafiltration membranes modified with sulfopropyl methacrylate functionalized SBA-15 |
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Authors: | Eid H Alosaimi Ibrahim Hotan Alsohaimi Hassan MA Hassan Qiao Chen Saad Melhi Ayman Abdelaziz Younes |
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Affiliation: | 1. Department of Chemistry, College of Science, University of Bisha, Bisha 61922, Saudi Arabia;2. Chemistry Department, College of Science, Jouf University, Sakaka 2014, Saudi Arabia;3. Chemistry Department, School of Life Sciences, Sussex University, Brighton BN1 9QJ, UK |
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Abstract: | A non-solvent induced phase separation (NIPS) process was used to fabricate a series of sulfonated polyethersulfone (SPES) membranes blending with different concentrations of SBA-15-g-PSPA with the applications in the ultrafiltration (UF) process. SBA-15 was modified with 3-methacrylate-propyltrimethoxysilane (MPS) to form SBA-15-g-MPS. It was further modified with the charge tailorable polymer chains by reacting with 3-sulfopropyl methacrylate potassium salt. The nanoparticles were uniformly dispersed and finger-like channels were developed within the membrane. The adding of surface modified SBA-15-g-PSPA nanoparticles has significantly improved membrane water permeability, hydrophilicity, and antifouling properties. The pure water fluxes of the composite SPES membranes were significantly higher than the pristine SPES membrane. For the membrane containing 5% (mass) of SBA-15-g-PSPA (MSSPA5), the pure water flux was increased dramatically to 402.15 L·m-2·h-1, which is ~1.5 times that of MSSPA0 (268.0 L·m-2·h-1). The high flux rate was achieved with 3% (mass) of SBA-15 nanoparticles with retained high rejection ratio 98% for natural organic matter. The results indicate that the fashioned composite membrane comprising SBA-15-g-PSPA nanoparticles have a promising future in ultrafiltration applications. |
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Keywords: | Ultrafiltration membrane Antifouling Permeability SBA-15 NOM foulant |
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