A method of separating hydrocarbons in an aqueous mixture comprising exposing the aqueous mixture to a cellulose/ionic liquid membrane, wherein the aqueous mixture includes hydrocarbons, and removing the hydrocarbons from the aqueous mixture as the aqueous mixture flows through the cellulose/ionic liquid membrane, wherein the hydrocarbons do not flow through the cellulose/ionic liquid membrane. A filter system, comprising a cellulose/ionic liquid membrane used as the filter to separate hydrocarbons from an aqueous mixture.

A method of separating hydrocarbons in an aqueous mixture comprising exposing the aqueous mixture to a cellulose/ionic liquid membrane, wherein the aqueous mixture includes hydrocarbons, and removing the hydrocarbons from the aqueous mixture as the aqueous mixture flows through the cellulose/ionic liquid membrane, wherein the hydrocarbons do not flow through the cellulose/ionic liquid membrane. A filter system, comprising a cellulose/ionic liquid membrane used as the filter to separate hydrocarbons from an aqueous mixture.

A semipermeable composite membrane that reduces an environmental load, and a method of producing the semipermeable composite membrane. A semipermeable composite membrane includes, on a porous support, a semipermeable membrane containing a crosslinked polyamide and a cellulose nanofiber. A method of producing the semipermeable composite membrane includes obtaining a mixed solution containing the cellulose nanofiber, water, and an amine component, and obtaining the semipermeable composite membrane by making the mixed solution be in contact with the porous support, thereafter, causing a cross-linking reaction of the amine component in the mixed solution, with the amine component adhering to the porous support.

A semipermeable composite membrane that reduces an environmental load, and a method of producing the semipermeable composite membrane. A semipermeable composite membrane includes, on a porous support, a semipermeable membrane containing a crosslinked polyamide and a cellulose nanofiber. A method of producing the semipermeable composite membrane includes obtaining a mixed solution containing the cellulose nanofiber, water, and an amine component, and obtaining the semipermeable composite membrane by making the mixed solution be in contact with the porous support, thereafter, causing a cross-linking reaction of the amine component in the mixed solution, with the amine component adhering to the porous support.

Treatment methods for reduction of (1.fwdarw.3)-β-D-glucan leachables from cellulose-containing filter materials are described.

Treatment methods for reduction of (1.fwdarw.3)-β-D-glucan leachables from cellulose-containing filter materials are described.

The objective of the present invention is to provide a composite separation membrane which is excellent in not only a liquid permeable performance and a separation performance relatively but also a durability and which is particularly useful as a membrane for liquid treatment, and a method for treating a liquid by using the composite separation membrane. The composite separation membrane according to the present invention is characterized in comprising a supporting base material and a complex layer, wherein the complex layer is placed on the supporting base material, the complex layer comprises oxidized metal nanosheets, graphene oxide and an alkanolamine, and at least one of the alkanolamine is present between the oxidized metal nanosheets.

The present disclosure relates to a method for separating an organic zinc catalyst dispersed in a polyalkylene carbonate resin solution by filtering the polyalkylene carbonate resin solution using a composite filtering membrane, which is a composite material comprising a hydroxyl group-containing material and polyolefin material and has a form in which one or both surfaces of the polyolefin material is coated with the hydroxyl group-containing material.

The present disclosure relates to a method for separating an organic zinc catalyst dispersed in a polyalkylene carbonate resin solution by filtering the polyalkylene carbonate resin solution using a composite filtering membrane, which is a composite material comprising a hydroxyl group-containing material and polyolefin material and has a form in which one or both surfaces of the polyolefin material is coated with the hydroxyl group-containing material.

The present disclosure provides methods of controlling the size of cellulose crystals by mixing a first composition comprising cellulose and coagulating this mixture with varying concentrations of hydrogen peroxide.