Nanofiber Membrane Filters 99.9% of Salt from Seawater within Minutes The nanofiber membrane upheld a 99.9% salt rejection rate for a month. By Ameya Paleja Jul 06, 2021 Schematic of the electrospinning device used to make this nanofiber membraneElsevier The World Health Organization estimates that over 785 million people lack a clean source of drinking water. Even though 71 percent of the Earth’s surface is covered by seawater, we cannot drink