Method for preparing catalyst for catalyzing organic pollutants in wet oxidation water

A technology that catalyzes wet oxidation and organic pollutants. It is applied in the direction of catalyst activation/preparation, water pollutants, oxidized water/sewage treatment, etc. It can solve the problems of non-polar solvents that are not environmentally friendly, and achieve good hydrothermal stability and stability. Good performance and high catalytic activity

Inactive Publication Date: 2013-06-19
扬州鑫磊环境工程有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

This method is relatively simple, but the use of non-polar solvents is not environmentally friendly
[0009] At present, with SBA-15 mesoporous molecular sieve as the carrier, ultrasonic wave and additive Fe 2 o 3 The preparation of catalysts loaded with highly dispersed copper oxide and its application in water treatment have not been reported.

Method used

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  • Method for preparing catalyst for catalyzing organic pollutants in wet oxidation water
  • Method for preparing catalyst for catalyzing organic pollutants in wet oxidation water

Examples

Experimental program
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preparation example Construction

[0030] 1. Preparation of SBA-15 mesoporous molecular sieve:

[0031] (1) Take 1.6ml of concentrated hydrochloric acid in 130.0ml of water to make a hydrochloric acid aqueous solution with pH ≈ 1.0.

[0032] (2) Take 100.0ml of aqueous hydrochloric acid solution prepared in step (1), and weigh 4.0g of template agent triblock copolymer EO 20 PO 70 EO 20 (P123) was stirred in a 40.0°C water bath to fully dissolve it to form a mixed aqueous solution containing P123.

[0033] (3) Weigh 9.0g of tetraethyl orthosilicate (TEOS) and place it in the remaining hydrochloric acid aqueous solution (about 31.6ml) in step (1), and pre-hydrolyze TEOS in a water bath at 40.0°C for 3.0h to form orthosilicon-containing Mixed aqueous solution of ethyl acetate (TEOS).

[0034] (4) Add the mixed aqueous solution containing TEOS to the P123 mixed aqueous solution dropwise, and stir in a water bath at 40.0°C for 24.0h; Crystallization 48.0h.

[0035] (5) After the crystallization, the obtained c...

example 1

[0049] The prepared CuO-Fe 2 o 3 / SBA-15 catalyst for catalytic oxidation treatment of organic wastewater containing phenol.

[0050] The initial concentration of organic wastewater is 200mg·L -1 phenol aqueous solution, the amount of catalyst is 0.3g / L, the initial concentration of hydrogen peroxide is 1.5g / L, the treatment temperature is 60°C, and the operation is under normal pressure. After 60 minutes of treatment, the removal rate of phenol can reach 100%, and the removal rate of TOC Up to 86.0%.

example 2

[0052] The prepared CuO-Fe 2 o 3 / SBA-15 catalyst for catalytic oxidation of rhodamine B in aqueous solution.

[0053] The initial concentration of Rhodamine B was 100mg·L -1 , the amount of catalyst is 0.4g / L, the initial concentration of hydrogen peroxide is 1.8g / L, the treatment temperature is 70°C, the operation is normal pressure, pH=7.0, after 100 minutes of treatment, the decolorization rate of rhodamine B can reach 100%. The removal rate of TOC can reach 67.0%.

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Abstract

The invention discloses a method for preparing a catalyst for catalyzing organic pollutants in wet oxidation water, and belongs to the field of water treatment technologies and environmental functional materials. When the method is used for preparing a meso-porous SBA-15 molecular sieve, a triblock copolymer EO20PO70EO20(P123) is used as a template, tetraethoxysilane (TEOS) is used as a silicon source, and hydrochloric acid is used as an acid source; and the meso-porous SBA-15 molecular sieve with good hydrothermal stability and large specific area is used as a carrier, CuO is used as an active ingredient, and ultrasonic waves are used for acting for a certain period of time in the preparation process to promote the dispersion of the active ingredient. Because ferric nitrate acts with sodium hydroxide to generate a deposit of ferric hydroxide in the method, Fe2O3 is obtained after the deposit is roasted, and a small amount of the Fe2O3 is used as an auxiliary agent to prevent the active ingredient from being sintered in the roasting process.

Description

technical field [0001] The invention belongs to the field of water treatment technology and environmental functional materials. Background technique [0002] With the continuous development of industry, petrochemical, chemical pharmaceutical, textile printing and dyeing, food processing and other industries discharge a large amount of biodegradable organic wastewater. Traditional biochemical methods have shown certain limitations in the treatment of such wastewater, resulting in wastewater treatment. Reduced efficiency and extended processing cycle restrict the production of enterprises. Among many water treatment methods, catalytic wet oxidation is an important method in the research of industrial water treatment, among which catalytic wet hydrogen peroxide oxidation (CWPO for short), with H 2 o 2 as the oxidizing agent, the catalyst catalyzes H 2 o 2 Decomposition produces hydroxyl radicals OH, the oxidation potential of OH is 2.80V, OH can react with almost any pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/035B01J37/34C02F1/72C02F101/34C02F101/38
Inventor 孔黎明王菲姚日远菅盘铭
Owner 扬州鑫磊环境工程有限公司
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