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Preparation method and application of modified ceramic membrane

A ceramic membrane and modification technology, applied in chemical instruments and methods, textile industry wastewater treatment, special treatment targets, etc., can solve the problems of small particles of nano-titanium dioxide materials, ceramic membranes that do not have photocatalytic properties, and difficult to control micropores, etc. , to achieve the effect of large nano-titanium dioxide material particles, good photocatalytic properties, and uniform and dense pores

Pending Publication Date: 2019-08-02
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. When the foaming agent foams, the bubbles are uneven, disorderly, and produce micropores with large pore sizes. At the same time, it is difficult to control the micropores to penetrate the thickness direction of the ceramic material to form micropores for filtration. Therefore, the general nano The nano-micropores on the ceramic membrane have a large pore size, which makes the effect of filtering sewage general;
[0006] 2. The ceramic membrane does not have photocatalysis, or the photocatalytic activity of the titanium dioxide nanobelt loaded on it is low, and the nano titanium dioxide material particles are small and difficult to recycle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A method for preparing a modified ceramic membrane, comprising the following steps:

[0045] A. Dissolve polyacrylamide, sodium dodecyl sulfonate, cocoic acid monoethanolamide and PA98591 in water, then weigh anorthite powder, γ-type aluminum oxide, silicon dioxide and titanium dioxide respectively, and mix After uniformity, add it to the aqueous solution of polyacrylamide, stir for 20 to 40 minutes, then add bisacrylamide tartrate, and continue stirring until the mixture is uniform to obtain a mixed slurry;

[0046] B. Dissolve sodium polyacrylate in water, add chitosan fiber and graphene oxide fiber, and disperse by ultrasonic to obtain a uniform suspension dispersion;

[0047] C, the mixed slurry obtained in step A is stirred and mixed with the suspension dispersion obtained in step B to form a mixture, and then a magnetic field is applied in a certain direction of the stirring container to make chitosan fibers and graphene oxide fibers in the mixture Extend in a ce...

Embodiment 2

[0067] A method for preparing a modified ceramic membrane, comprising the following steps:

[0068] A. Dissolve polyacrylamide, sodium dodecyl sulfonate, cocoic acid monoethanolamide and PA98591 in water, then weigh anorthite powder, γ-type aluminum oxide, silicon dioxide and titanium dioxide respectively, and mix After uniformity, add it to the aqueous solution of polyacrylamide, stir for 20 minutes, then add bisacrylamide tartrate, continue stirring until the mixture is uniform, and obtain a mixed slurry;

[0069] B. Dissolve sodium polyacrylate in water, add chitosan fiber and graphene oxide fiber, and disperse by ultrasonic to obtain a uniform suspension dispersion;

[0070] C, the mixed slurry obtained in step A is stirred and mixed with the suspension dispersion obtained in step B to form a mixture, and then a magnetic field is applied in a certain direction of the stirring container to make chitosan fibers and graphene oxide fibers in the mixture Extend in a certain di...

Embodiment 3

[0089] A method for preparing a modified ceramic membrane, comprising the following steps:

[0090] A. Dissolve polyacrylamide, sodium dodecyl sulfonate, cocoic acid monoethanolamide and PA98591 in water, then weigh anorthite powder, γ-type aluminum oxide, silicon dioxide and titanium dioxide respectively, and mix After uniformity, add it to the aqueous solution of polyacrylamide, stir for 40 minutes, then add bisacrylamide tartrate, continue stirring until the mixture is uniform, and obtain a mixed slurry;

[0091] B. Dissolve sodium polyacrylate in water, add chitosan fiber and graphene oxide fiber, and disperse by ultrasonic to obtain a uniform suspension dispersion;

[0092] C, the mixed slurry obtained in step A is stirred and mixed with the suspension dispersion obtained in step B to form a mixture, and then a magnetic field is applied in a certain direction of the stirring container to make chitosan fibers and graphene oxide fibers in the mixture Extend in a certain di...

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Abstract

The invention discloses a preparation method of a modified ceramic membrane. The preparation method comprises the following steps: step A, preparing mixed slurry of polyacrylamide, sodium dodecyl benzene sulfonate, coconut oleic acid monoethanolamide and PA98591, anorthite powder, gamma-type aluminum oxide, silicon dioxide and titanium dioxide; step B, preparing suspension dispersion liquid of sodium polyacrylate, chitosan fibers and graphene oxide fibers; step C, stirring and mixing the mixed slurry obtained in the step A with the suspension dispersion liquid obtained in the step B to form amixture, then applying a magnetic field in one direction of a stirring container, and standing for foaming at the same time; step D, forming, curing and drying to obtain a blank body; step E, placingthe blank body in an electric arc furnace for sintering, and firing to obtain a ceramic membrane; and step F, loading titanium dioxide nanobelts on the ceramic membrane to obtain the modified ceramicmembrane. The modified ceramic membrane prepared with the preparation method of the modified ceramic membrane provided by the invention has a moderate micropore diameter, and is excellent in sewage filtering effect and photocatalysis.

Description

technical field [0001] The invention relates to the technical field of functional inorganic materials, in particular to a preparation method and application of a modified ceramic membrane. Background technique [0002] Ceramic membranes, also known as inorganic ceramic membranes, are asymmetric membranes prepared from inorganic ceramic materials through special processes. Ceramic membranes are divided into tubular ceramic membranes and flat ceramic membranes. Please note that "CT film" is not an alias of ceramic film, this title is actually a wrong expression of the English abbreviation of ceramic film by non-professionals. The tube wall of the tubular ceramic membrane is densely covered with micropores. Under the action of pressure, the raw material liquid flows in the membrane tube or outside the membrane, small molecular substances (or liquid) pass through the membrane, and macromolecular substances (or solids) are intercepted by the membrane, thereby achieving separatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/195C04B35/622C04B41/87C01G23/047B82Y40/00C02F1/44C02F101/30C02F103/30
CPCC04B35/803C04B35/195C02F1/444C04B35/62218C04B41/87C04B41/009C04B41/5041C01G23/047B82Y40/00C02F2101/30C02F2103/30C02F2303/16C04B2235/3217C04B2235/3418C04B2235/3232C04B2235/6567C01P2004/17C01P2006/12
Inventor 谭军韦晓燕欧阳玉霞
Owner JIAXING UNIV
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