Preparation method for graphene-based film and application of graphene-based film to oil-water separation

A graphene membrane and graphene hydrogel technology, applied in semi-permeable membrane separation, separation method, liquid separation and other directions, can solve the problems of lack of comprehensive investigation of oil-water separation performance, complex process flow, and many additives, etc. The effect of light and stable membrane quality, low energy consumption and low cost
CN103768960AActive Publication Date: 2014-05-07BEIJING UNIV OF CHEM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF CHEM TECH
Publication Date
2014-05-07

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Abstract

The invention relates to a preparation method for a graphene-based film and application of the graphene-based film to oil-water separation. The graphene-based film is obtained by preparing gel from oxidized graphene and a crosslinking agent, drying the gel, compacting the gel under the pressure of 10-200 kPa, and reducing. The preparation method for the graphene-based oil-water separation film is simple, feasible and low in cost and can be applied to batch industrial production; the film is light in mass and stable and can be cyclically used at high efficiency; the graphene-based oil-water separation film material can separate oil from an oil-water mixture at high efficiency, low energy consumption and ultrahigh speed in various environments, the water content is lower than 200ppm, the minimum water concentration is up to 10ppm, and the water concentration is different slightly according to different oil phases.
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Description

technical field

[0001] The invention relates to a preparation method of a graphene base membrane and its application in oil-water separation, and belongs to the technical fields of functional material technology, membrane separation technology and environmental protection technology. Background technique

[0002] Crude oil extraction, marine oil spills, industrial and domestic oily sewage, etc. have brought great harm to the environment and ecological balance, so that oil-water separation technology has attracted much attention. At present, membrane separation technology is an effective method for the treatment of oily sewage, mainly organic microfiltration membranes and organic ultrafiltration membranes. However, due to its poor chemical stability and thermal stability, and even swelling and dissolution, the use of such membranes is greatly limited.

[0003] The patent application with the application number of 201310407309 discloses a preparation method of a magnetic grap...

Claims

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