A silver, lanthanum ion water purification composite ceramic membrane technology

A composite ceramic membrane and lanthanum ion technology, which is applied in ceramic products, membrane technology, water pollutants, etc., can solve the problems of insufficient application of water purification, achieve the effects of reducing toxicity and optimizing the preparation process

Active Publication Date: 2022-05-27
江西嘉陶无机材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, more research on ceramic membranes is mainly focused on gas separation, industrial wastewater treatment, membrane material preparation, etc., and its application in water purification is relatively insufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A silver and lanthanum ion water purification composite ceramic membrane process, comprising the following steps:

[0017] Step 1, configure concentrated sodium hydroxide solution, in the concentrated sodium hydroxide solution, the concentration of sodium hydroxide is 8mol / L, and the rest is water; according to the mixing ratio of titanium dioxide / concentrated sodium hydroxide solution=0.3g / 100mL Mix the titanium dioxide powder and concentrated sodium hydroxide solution to obtain a mixture, stir the mixture at a speed of 80r / min for 10min, then quickly pour it into the hydrothermal reaction kettle, seal the kettle body, heat it to 190±10℃ and keep it for 70h, the insulation is over After air-cooling to room temperature, the kettle body was opened, the mixture was allowed to stand, the supernatant liquid was removed, and the white precipitate in the lower layer was washed with deionized water until the liquid was neutral after washing, and dried at 80 °C to obtain sodium ...

Embodiment 2

[0022] A silver and lanthanum ion water purification composite ceramic membrane process, comprising the following steps:

[0023] Step 1, configure concentrated sodium hydroxide solution, in the concentrated sodium hydroxide solution, the concentration of sodium hydroxide is 9mol / L, and the rest is water; according to the mixing ratio of titanium dioxide / concentrated sodium hydroxide solution=0.4g / 100mL Mix the titanium dioxide powder and concentrated sodium hydroxide solution to obtain a mixture, stir the mixture at a speed of 80r / min for 10min, then quickly pour it into the hydrothermal reaction kettle, seal the kettle body, heat it to 190±10℃ and keep it for 70h, the insulation is over After air-cooling to room temperature, the kettle body was opened, the mixture was allowed to stand, the supernatant liquid was removed, and the white precipitate in the lower layer was washed with deionized water until the liquid was neutral after washing, and dried at 80 °C to obtain sodium ...

Embodiment 3

[0028] A silver and lanthanum ion water purification composite ceramic membrane process, comprising the following steps:

[0029] Step 1, configure concentrated sodium hydroxide solution, in the concentrated sodium hydroxide solution, the concentration of sodium hydroxide is 9mol / L, and the rest are water; according to the mixing ratio of titanium dioxide / concentrated sodium hydroxide solution=0.5g / 100mL Mix the titanium dioxide powder and concentrated sodium hydroxide solution to obtain a mixture, stir the mixture at a speed of 80r / min for 10min, then quickly pour it into the hydrothermal reaction kettle, seal the kettle body, heat it to 190±10℃ and keep it for 70h, the insulation is over After air-cooling to room temperature, the kettle body was opened, the mixture was allowed to stand, the supernatant liquid was removed, and the white precipitate in the lower layer was washed with deionized water until the liquid was neutral after washing, and dried at 80 °C to obtain sodium...

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Abstract

The invention discloses a silver and lanthanum ion water purification composite ceramic membrane process, comprising the following steps: step 1, reacting titanium dioxide powder and concentrated sodium hydroxide solution to obtain sodium trititanate powder; The mixed aqueous solution of iridium chloride is soaked in sodium trititanate powder, and then calcined to obtain solid phase powder A; step 3, the solid phase powder A is pressed into a tablet sample, and calcined to obtain ceramic sheet B; step 4, ceramic sheet B is obtained Put in dopamine aqueous solution, then put the dopamine aqueous solution in a vacuum box, fill the box with vacuum, then take out the ceramic sheet, put it in Tris buffer, soak for 18-20 hours, then take out the ceramic sheet, wash with deionized water , and dried to obtain the composite ceramic membrane. The invention optimizes the preparation process of the ceramic membrane, the prepared ceramic membrane can retain a large amount of free silver ions and lanthanum ions in the sewage, which is helpful for the recovery and utilization of metal ions in the waste water, and can reduce the toxicity of the sewage.

Description

technical field [0001] The invention relates to the technical field of new energy materials, in particular to a silver and lanthanum ion water purification composite ceramic membrane process. Background technique [0002] Ceramic Membrane is a kind of inorganic membrane, which is based on inorganic ceramic materials such as alumina (Al 2 O 3 ), titanium dioxide (TiO 2 ), zirconia (ZrO 2 ) or silicon dioxide (SiO 2 ), etc. are formed by surface coating, high temperature sintering, extrusion molding and other processes. The use of inorganic ceramic membranes originated from the gas separation technology in the 20th century, but with the improvement of process technology and the gradual decline of production costs, more and more fields have carried out research on ceramic membranes. Especially because of its high mechanical strength and high chemical stability, there are many application potentials that can be explored in modern industry. At present, more research on cera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/12B01D67/00C02F1/44C04B35/462C04B35/50C04B35/622C04B38/04C02F101/20
CPCB01D71/024B01D71/025B01D71/027B01D69/12B01D67/0039C02F1/44C04B38/04C04B35/462C04B35/50C04B35/622C04B2235/3234C04B2235/3229C04B2235/3224C02F2101/20
Inventor 程春明杨涛黄浩程言淇
Owner 江西嘉陶无机材料有限公司
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