This invention provides a new high flux reverse osmosis (RO) membrane comprising a nanoporous polyethersulfone (PES)/polyethylene oxide-polysilsesquioxane (PEO-Si) blend support membrane (PES/PEO-Si) comprising a polyethylene oxide-polysilsesquioxane (PEO-Si) polymer and a polyethersulfone (PES) polymer, a hydrophilic polymer inside the pores on the skin layer surface of the polyethersulfone/polyethylene oxide-polysilsesquioxane blend support membrane, and a thin, nanometer layer of cross-linked polyamide on the skin layer surface of said polyethersulfone/polyethylene oxide-polysilsesquioxane blend support membrane, and a method of making such a membrane. This invention also provides a method of using the new high flux reverse osmosis membrane comprising nanoporous PES/PEO-Si blend support membrane for water purification.

The present disclosure is concerned with negatively charged filtration membranes and methods of making and using same, for example, in the concentration and/or filtration of dairy products. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Membranes comprising chitosan and re-acetylated chitosan for use in desalination and Salinity Gradient Power Vapor Pressure Desalination (SGP-VPD). A thin film composite (TFC) membrane comprising a minimally hydrophilic re-acetylated chitosan outer layer and a substantially hydrophilic chitosan porous support layer for performing desalination and a multi-layer membrane comprising substantially hydrophobic re-acetylated chitosan inner and outer layers surrounding a substantially hydrophilic chitosan porous support layer for performing SGP-VPD.

A blood filtration method, system, device and media for removing gram negative bacteria from the blood wherein the media includes a substrate coated with mannose optionally in constitution with substrate coated with heparin.

A blood filtration method, system, device and media for removing gram negative bacteria from the blood wherein the media includes a substrate coated with mannose optionally in constitution with substrate coated with heparin.

This invention relates generally to a chitosan-graphene oxide membrane and process of making the same. The nanocomposite membrane can filter water and remove contaminants without fouling like other commercially-available polymer-based water filters. The membrane can be used as a flat sheet filter or can be engineered in a spiral filtration module. The membrane is scalable and tunable for many water contaminants including pharmaceuticals, pesticides, herbicides, and other organic chemicals. The membrane uses chitosan, which is low-cost, renewable biopolymer typically considered to be a waste product and the second most abundant biopolymer on Earth, thus making the membrane an environmentally-friendly product choice.

This invention relates generally to a chitosan-graphene oxide membrane and process of making the same. The nanocomposite membrane can filter water and remove contaminants without fouling like other commercially-available polymer-based water filters. The membrane can be used as a flat sheet filter or can be engineered in a spiral filtration module. The membrane is scalable and tunable for many water contaminants including pharmaceuticals, pesticides, herbicides, and other organic chemicals. The membrane uses chitosan, which is low-cost, renewable biopolymer typically considered to be a waste product and the second most abundant biopolymer on Earth, thus making the membrane an environmentally-friendly product choice.

Using GA as the crosslinking agent, the PVA/GA/CS-M.sup.+ pervaporation membrane having high mechanical strength can be readily obtained via blending the Ag.sup.+, Cu.sup.2+, or Fe.sup.3+-chelated CS precursor with PVA, performing excellent permeability and selectivity for the dehydration of organic solvents.

Using GA as the crosslinking agent, the PVA/GA/CS-M.sup.+ pervaporation membrane having high mechanical strength can be readily obtained via blending the Ag.sup.+, Cu.sup.2+, or Fe.sup.3+-chelated CS precursor with PVA, performing excellent permeability and selectivity for the dehydration of organic solvents.

A gas separation membrane, characterized by having a porous support and a polyamine layer formed on the porous support, the number-average molecular weight of the polyamine constituting a part of the polyamine being 100,000-500,000.