A double metal hydroxide ceramic membrane for desalination of seawater and its preparation method

Abstract

The invention relates to the technical field of active carbon and preparation thereof, in particular to a bi-metal hydroxide ceramic film used for sea water desalination and a preparation method thereof. The bi-metal hydroxide ceramic film used for sea water desalination comprises porous ceramic substrate and a film which covers the porous ceramic substrate. The bi-metal hydroxide ceramic film ischaracterized by being prepared from the following substances in parts by weight: 3-12 parts of graphene, 10-30 parts of magnesium salts, 5-45 parts of aluminum salts, 2-8 parts of a surfactant, 3-6 parts of a silane coupling agent, 1-5 parts of a coalescing agent, 2-8 parts of an alkaline source, 40-80 parts of an organic solvent and 100-200 parts of water. According to the bi-metal hydroxide ceramic film used for sea water desalination and the preparation method thereof disclosed by the invention, sea water can be directly desalinated; the ceramic film has repellency on salt ions, effectively prevents the salt ions from stacking to block water molecules from passing, is high in filter efficiency, is long in service life, and overcomes the defects such as incomplete filtration and low filter efficiency of a current filter film.

Description

technical field [0001] The invention relates to the technical field of activated carbon and its preparation, in particular to a double metal hydroxide ceramic membrane used for seawater desalination and a preparation method thereof. Background technique [0002] Water resources are the material basis for human survival. However, with the growth of the world's population and the continuous development of industrialization, the crisis of water resources faced by mankind is becoming more and more serious, especially in my country with a large population, uneven distribution of water resources, and water shortages. increasingly serious. The crisis of fresh water resources on the earth is becoming more and more serious, and seawater desalination is one of the important ways to solve the crisis of water resources. Among them, the reverse osmosis seawater desalination method refers to the desalination of seawater by using the separation effect of the reverse osmosis membrane, and t...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art that filter and desalinate seawater have high requirements on membrane materials, low seawater desalination efficiency, and difficulty in realizing industrialized desalination of seawater, the present invention proposes a double metal hydroxide ceramic membrane and its The preparation method, it can directly desalinate seawater, and the ceramic membrane is repellent to salt ions, which can effectively prevent its accumulation and hinder the passage of water molecules, has high filtration efficiency and long service life, and overcomes the incomplete filtration and low filtration efficiency of current filtration membrane defect

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