Method for selectively extracting ionic species from an aqueous solution

摘要

A method for selectively extracting species from an aqueous solution which comprises contacting the aqueous solution with a membrane (17) capable of selectively transporting species from a liquid to another, the membrane (17) comprising a porous polymer support having an average surface pore size less than 100nm, coated with a continuous layer of a fluorinated polymer obtained by plasma energized chemical vapor deposition (PECVD) using a plasma containing at least one fluorinated compound.