ArticleACS omega2026
Drinking Water Treatment Using PES/ZnO Mixed Matrix Membranes: Enhanced Antifouling Performance and Rejection at Low Nanoparticle Loadings.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Poly-(ether sulfone) (PES) ultrafiltration mixed matrix membranes containing zinc oxide (ZnO) nanoparticles were fabricated and evaluated for drinking water treatment, with emphasis on fouling control and pollutant rejection. Unlike most studies that use model foulants, membranes were tested with organic-rich surface water from the Guarapiranga Reservoir, enabling a realistic assessment under drinking water conditions. Membranes (0-1.0 wt % ZnO) were prepared by nonsolvent-induced phase separation and characterized (SEM, AFM, porosity, hydrophilicity, zeta potential, permeability). Crossflow experiments with raw water included resistance partitioning, Hermia model analysis, and foulant extraction. Low ZnO loadings (0.25-0.50 wt %) delivered the best performance, reducing total fouling resistance by about 84% relative to pristine PES and achieving flux recovery above 96%. Improvements were linked to a more negative surface charge (-26 to -31 mV) and favorable pore structure that promoted electrostatic repulsion and reversible deposit formation. Membranes in this range also showed higher rejection of natural organic matter, with greater removal of color, TOC, and UV
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