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A magnetic induction charged ceramic ultrafiltration membrane and preparation method thereof

A technology of ceramic ultrafiltration membrane and magnetic induction, which is applied in the field of membrane separation, can solve the problems of short service life and low ion rejection rate of charged ultrafiltration membrane, and achieve the effects of low cost, high ion rejection rate and low production cost

Active Publication Date: 2015-09-30
钱陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defects of short service life and low ion rejection rate of the current charged ultrafiltration membrane, a magnetic induction charged ceramic ultrafiltration membrane and its preparation method are proposed. , and then add dispersant, thickener, defoamer to prepare the film-making liquid, coat the film on the porous support, and then sinter and cool under the protection of nitrogen to obtain the magnetic induction charged ceramic ultrafiltration membrane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Dissolving 10 parts by weight of alumina colloidal particles in a solvent to form a uniformly dispersed and stable sol;

[0033] 2) Add 1 part by weight of copper metal fiber and 1 part by weight of polyethyleneimine to the sol solution obtained in step 1), stir and disperse evenly, and then add 2 parts by weight of hydroxyethyl cellulose and 1 part by weight of Silicone defoaming agent, increase the viscosity of the sol solution, make the metal fiber not easy to settle in the sol solution, disperse evenly, and form a film-making solution;

[0034] 3) Coat the film-making liquid obtained in step 2) on a flat porous ceramic support, air-dry for 3 hours under natural conditions, and then coat the film again, repeating 2 times, and then sinter and dry the air-dried film under the protection of nitrogen. The temperature was lowered and cooled, the sintering temperature was 500° C., and the sintering time was 2 hours to obtain a magnetic induction charged ceramic ultrafil...

Embodiment 2

[0036] 1) 10 parts by weight of titanium oxide colloidal particles are dissolved in a solvent to form a uniformly dispersed and stable sol;

[0037] 2) Add 2 parts by weight of aluminum metal fiber and 1 part by weight of citrate to the sol solution obtained in step 1), stir and disperse evenly, then add 2 parts by weight of polyvinyl alcohol and 1 part by weight of silicone defoaming while stirring agent to increase the viscosity of the sol solution, so that the metal fibers are not easy to settle in the sol solution, disperse evenly, and form a film-making solution;

[0038]3) Coat the film-making solution obtained in step 2) on a flat porous metal support, air-dry for 3 hours under natural conditions, and then coat the film again, repeating 3 times, and then sinter and dry the air-dried film under the protection of nitrogen. The temperature was lowered and cooled, the sintering temperature was 600° C., and the sintering time was 4 hours to obtain a magnetic induction charge...

Embodiment 3

[0040] 1) 15 parts by weight of zirconia colloidal particles are dissolved in a solvent to form a uniformly dispersed and stable sol;

[0041] 2) Add 3 parts by weight of copper metal fiber and 2 parts by weight of glycerol to the sol solution obtained in step 1), stir and disperse evenly, and then add 2 parts by weight of polyethylene glycol and 1 part by weight of silicone disinfectant while stirring. Foaming agent to increase the viscosity of the sol solution, so that the metal fibers are not easy to settle in the sol solution, disperse evenly, and form a film-making solution;

[0042] 3) Coat the membrane-forming solution obtained in step 2) on the tubular porous ceramic support, air-dry for 5 hours under natural conditions, and coat the membrane again, repeating 4 times, and then sinter and dry the air-dried membrane under the protection of nitrogen. The temperature was lowered and cooled, the sintering temperature was 800° C., and the sintering time was 4 hours to obtain...

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Abstract

The invention relates to a magnetic-induction charged ceramic ultra-filtration membrane and a preparation method of the magnetic-induction charged ceramic ultra-filtration membrane. A metal fiber is added into a colloid particle solution and stirred up and dispersed, a dispersant, a thickening agent and a defoamer are added into the mixture solution to prepare a membrane formation solution, a porous support is coated with the membrane formation solution, the membrane is cast and cooled under the protection of nitrogen, so as to prepare the magnetic-induction charged ceramic ultra-filtration membrane. The retaining effect of the ultra-filtration membrane on charged ions varies with the external magnetic field, and the retaining effect can be adjusted at any moment according to the actual situation, and the retaining effect of the charged ions is larger than 98%. The ultra-filtration membrane has advantages of resistance to pollution and corrosion, high strength, long service life, and wide application value.

Description

technical field [0001] The invention relates to the field of membrane separation, in particular to a magnetic induction charged ceramic ultrafiltration membrane and a preparation method thereof. Background technique [0002] The principle of ultrafiltration technology is a new type of membrane separation technology with a certain pressure and flow rate at room temperature, using an asymmetric microporous structure and a semi-permeable membrane medium, and using the pressure difference on both sides of the membrane as the power. Ultrafiltration is a membrane technology that uses static pressure difference as the driving force to separate according to the difference in relative molecular mass. The ultrafiltration process is easy to operate and the equipment is relatively simple. The unique 0.01 ~ 0.1um pore size of the ultrafiltration membrane can effectively retain bacteria, most viruses, colloids and sludge, so as to achieve the purpose of separation, classification, purific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/02B01D67/00
Inventor 陈庆李兴文
Owner 钱陈
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