Tuning the surface properties of Fe3O4 by zwitterionic sulfobetaine: application to antifouling and dye removal membrane
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
In this paper, zwitterionic polysulfobetaine@Fe<inf>3</inf>O<inf>4</inf> (PSBMA@Fe<inf>3</inf>O<inf>4</inf>) nanoparticles were synthesized via covalent grafting and free radical polymerization and characterized. The PSBMA@Fe<inf>3</inf>O<inf>4</inf> noparticles had a zeta potential of ? 36 mV (pH 6.3), which guaranteed the high colloidal stability. The as-synthesized nanoparticles were employed as a nanofiller to prepare superior antifouling polysulfone hybrid hollow fiber membranes. The FM-2 membrane exhibited the maximum pure water permeability of 61.1 L/m2 h bar with humic acid (HA) removal efficiency of 98%. The fouling resistance was evaluated using HA as a foulant, and the results suggested that the FM-2 membrane had less amount of HA adsorption with flux recovery ratio of 88.4%. Furthermore, the FM-2 membrane was demonstrated the reactive black-5 and reactive orange-16 removal of above 99% and 84% without much reduction in the dye solution permeability. © 2020, Islamic Azad University (IAU).
Description
Keywords
Free radicals, Frequency modulation, Iron oxides, Magnetite, Membranes, Nanoparticles, Sols, Synthesis (chemical), Colloidal Stability, Covalent grafting, Fouling resistance, Hollow fiber membranes, Polysulfobetaines, Pure water permeabilities, Removal efficiencies, Zwitterionic sulfobetaine, Free radical polymerization, adsorption, antifouling, dye, free radical, iron oxide, membrane, nanoparticle, pollutant removal, polymer, polymerization
Citation
International Journal of Environmental Science and Technology, 2020, 17, 9, pp. 4047-4060