Gravity-driven electrospun membranes for effective removal of perfluoro-organics from synthetic groundwater.

ABSTRACT: Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are emerging contaminants in water and soil. Electrospun membranes with open structure could treat PFAS in a gravity-driven mode with ultralow pressure needs. The electrospun ultrathin fibers (67 ± 27 nm) was prepared for the enhanced specific surface area; where polyvinylidene fluoride (PVDF) backbones and the grafted quaternary ammonium moieties (QA; PVDF-g-QA membranes) provided both hydrophobicity and anion-exchange ability (electrostatic interaction). High affinity towards the perfluorooctanoic acid (PFOA)/perfluorooctanesulfonic acid (PFOS) molecules (denoted as PFOX collectively) was observed, and >95% PFOX was removed from synthetic groundwater with a flux of 32.3 Lm^-2h^-1 at ΔP_o = 313 Pa. With a h

SUBMITTER: Wan H 

PROVIDER: S-EPMC9337624 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature