Ultra-permeable silk-based polymeric membranes for vacuum-driven nanofiltration.

ABSTRACT: Nanofiltration (NF) membranes are commonly supplied in spiral-wound modules, resulting in numerous drawbacks for practical applications (e.g., high operating pressure/pressure drop/costs). Vacuum-driven NF could be a promising and low-cost alternative by utilizing simple components and operating under an ultra-low vacuum pressure (<1 bar). Nevertheless, existing commercial membranes are incapable of achieving practically relevant water flux in such a system. Herein, we fabricated a silk-based membrane with a crumpled and defect-free rejection layer, showing water permeance of 96.2 ± 10 L m^-2 h^-1 bar^-1 and a Na₂SO₄ rejection of 96.0 ± 0.6% under cross-flow filtration mode. In a vacuum-driven system, the membrane demonstrates a water flu

SUBMITTER: Gan B 

PROVIDER: S-EPMC11455960 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature