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Method for degrading organic wastewater by adopting active carbon-based microwave catalyst

A technology of organic wastewater and activated carbon, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as low degradation efficiency, high cost, and long processing time , to achieve the effect of no secondary pollution, less floor space, and complete degradation

Inactive Publication Date: 2013-03-27
XIANGTAN UNIV
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Problems solved by technology

[0005] In order to overcome the problems of long processing time, low degradation efficiency and high cost in the prior art, the present invention proposes a new method for degrading organic wastewater and a new microwave catalyst for degrading organic wastewater. The catalyst and method of the present invention can effectively solve the problems existing in the prior art, and can be processed on a continuous scale, and are easy to industrialized production

Method used

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  • Method for degrading organic wastewater by adopting active carbon-based microwave catalyst
  • Method for degrading organic wastewater by adopting active carbon-based microwave catalyst
  • Method for degrading organic wastewater by adopting active carbon-based microwave catalyst

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preparation example Construction

[0024] TiO 2 -Preparation of AC microwave catalyst: add a certain amount of butyl titanate to rapidly stirring absolute ethanol, continue to stir for 30 minutes, add a certain amount of acetylacetone, and stir for another 30 minutes, then dropwise add absolute ethanol and deionized The mixed solution of water and concentrated nitric acid was added dropwise, stirred at a low speed for 2 hours, added 20 g of pretreated activated carbon, stirred for 2 hours, and placed in an ultrasonic cleaner for 3 hours. At this time, the obtained gel was left to stand for 24 h, and dried at 80° C. for 20 h. Calcined at 450°C for 2h. That is, the desired supported catalyst is obtained.

[0025] Preparation of CuO / AC catalyst: firstly, the carrier granular activated carbon was boiled and washed with deionized water, and dried for 12 hours; the activated carbon was impregnated with an equal volume of copper nitrate (Cu(NO3)2) solution by impregnation method, and after standing at room temperatu...

Embodiment 1

[0027] The microwave catalyst used is activated carbon: measure 100mL of 100mg / L methyl orange wastewater in a 500mL conical flask, add 1.8g of catalyst, after the catalytic reaction under the condition of microwave power of 600W for 6min, take the supernatant, and use The absorbance was measured by an ultraviolet-visible photometer, and the degradation rate was calculated to be 87.5%.

Embodiment 2

[0029] The microwave catalyst used is activated carbon: measure 100mL of 100mg / L methyl orange waste water in a 500mL conical flask, add 1.8g of catalyst, after the catalytic reaction under the condition of microwave power of 600W for 8min, take the supernatant, use The absorbance was measured by an ultraviolet-visible photometer, and the degradation rate was calculated to be 91.5%.

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Abstract

The invention relates to a method for degrading wastewater by adopting an active carbon-based microwave catalyst through catalytic oxidation under the microwave radiation. According to the technical scheme, the method comprises the steps of: using active carbon as a catalyst, or loading one or more metal oxides on the active carbon as a catalyst, then placing the catalyst in the organic wastewater, and degrading the organic wastewater by adopting the microwave radiation. The method provided by the invention can be used for continuously treating the wastewater through the microwave immobilizing catalyst. The method has the advantages of simpleness and easiness in operation, low investment and operation cost, small occupation area, thorough degradation, large range of concentration of degradable organic wastewater, and no secondary pollution, and is suitable for treating organic wastewater in industries such as printing and dyeing, papermaking, chemical engineering and pharmacy.

Description

technical field [0001] The invention relates to a method for degrading organic waste water with an activated carbon-based microwave catalyst. Background technique [0002] With the development of the economy, the burden on the environment is becoming increasingly heavy, especially the water body environment. Environmental pollution is a major challenge to the world. Organic wastewater has deep color, is difficult to biodegrade, and has complex components. When these organic pollutants flow into the water body, the water resource is seriously polluted and has potential danger to the human body. Aromatic compounds in industrial wastewater have been on the EPAs list of major pollutants since 1976. One of the most important subclasses of pollutants, dye wastewater, has attracted much attention. Treatment of various dye wastewaters is considered to be one of the main tasks in controlling environmental pollution worldwide. Because most organic compounds usually contain benzen...

Claims

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Application Information

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IPC IPC(8): C02F1/30B01J21/18B01J23/72
Inventor 周继承蒋尊芳高令飞谌敏飞
Owner XIANGTAN UNIV
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