▎ 摘　　要

NOVELTY - A water permeable membrane comprises porous support and composite coated on porous support comprising crosslinked graphene oxide compound, where crosslinked graphene oxide compound is formed by reacting mixture comprising graphene oxide compound and crosslinker comprising lignin. The membrane is water permeable and sufficiently strong to withstand a water pressure of 50 pounds per square inch while controlling water flow through the membrane. USE - A water permeable membrane for removing solute from an unprocessed solution (claimed). ADVANTAGE - The membrane provides selective resistance for solutes while providing water permeability. The membrane preparation process is more environment-friendly and more cost-effective. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) manufacture of water permeable membrane which involves curing aqueous mixture that is coated onto a porous support at 90-150 degrees C for 30 s to 5 hours to facilitate crosslinking within the aqueous mixture, where porous support is coated with aqueous mixture by applying aqueous mixture to porous support, and repeating as necessary to achieve a layer having a thickness of 50-2000 nm, and aqueous mixture is formed by mixing graphene oxide material, crosslinker comprising lignin, and additive, in an aqueous liquid; and (2) removal of solute from an unprocessed solution which involves exposing the unprocessed solution to the membrane.