Reusable Nanocomposite Membranes for Highly Efficient Arsenite and Arsenate Dual Removal from Water

Nanocomposite membranes (NCMs) of poly(vinylidene fluoride-hexafluoropropylene), PVDF-HFP, with different yttrium carbonate and magnetite loadings, are prepared, their dual adsorption capacity over neutral arsenite anionic arsenate species is evaluated. The nanoparticles (NPs) the corresponding NCMs fully characterized in morphology, microstructure, thermal, surface properties. nanocomposite present a micrometric porous structure homogeneous distribution active nanoparticles. Chemical, water-contact angle characteristics point out that they maintain chemical thermal stability polymer while improving wettability. Arsenic removal depends on NP loading pH media. For instance, efficiencies close to 100% achieved for under acidic conditions, also incremented above 80%. Fe3O4/PVDF-HFP shows affinity As(III) As(V) species, maximum capacities 92.82 137.08 mg g−1, respectively. In addition, both easily activated reused without significant efficiency loss. Consequently, represent low-cost, reusable, efficient water remediation systems suitable long-term conditions mimicking real polluted groundwater.