CoFe2O4-peroxymonosulfate based catalytic UF and NF polymeric membranes for naproxen removal: The role of residence time

Micropollutants pose a significant threat to water quality, aquatic life, and public health. A catalytic polymeric membrane, combining membrane filtration peroxymonosulfate (PMS) activation provides an alternative option their treatment. In this work, CoFe2O4 based particles were blended with polyethersulfone (PES) polymer UF (ultrafiltration) membranes fabricated by non-solvent induced phase inversion. The 2.0% concentration can effectively degrade 70% naproxen in batch experiment. Additionally, stable selective layer was built the layer-by-layer assembly of PDADMAC (poly(diallyldimethylammonium chloride)) PSS (poly(styrenesulfonate)) on surface membrane. Both NF (nanofiltration) measured full-recycling mode single-pass mode. mode, rejection both increased after adding PMS due adsorption. Naproxen removal at different fluxes indicates that longer residence time (i.e. lower flux) decrease permeate. same effect also observed By prolonging level membranes, exhibited 87.7% which is comparable membranes. Significantly, pressure used only 0.1 bar, showing great advantage reduced energy cost. These results reveal important role treatment efficiency micropollutants Moreover, application under low energy-friendly way removing micropollutants.