Method for degrading inorganic malodorous pollutant ammonia gas by ultraviolet light illumination

A technology of ultraviolet light and pollutants, which is applied in the field of photocatalytic degradation of pollutants, can solve the problems such as the degradation ability needs to be improved, the chemical bonds are easy to break, and the load is not firm, so it is beneficial to popularization and application, the operation method is simple and easy, and the degradation experiment The effect of mild conditions

Pending Publication Date: 2020-05-19
FUZHOU UNIV
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Problems solved by technology

However, in this patent, it will be dispersed on the glass fiber in the form of solid powder, which may be due to uneven dispersion and weak loading, and the preparation process of the catalyst material in this patent is more complicated than that in this patent.
In this patent, 185nm and 254nm ultraviolet light are used to stimulate the reaction. Since the photon energy of 185nm ultraviolet light is stronger than that of 254nm ultraviolet light, the chemical bond is easier to break. Under the optimal conditions of 185nm ultraviolet light excitation, it can only be used in 50min. It will degrade the ammonia gas with a concentration of about 6ppm, and the degradation ability needs to be improved, and there is no cycle test to show the persistence of the catalyst performance

Method used

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  • Method for degrading inorganic malodorous pollutant ammonia gas by ultraviolet light illumination
  • Method for degrading inorganic malodorous pollutant ammonia gas by ultraviolet light illumination
  • Method for degrading inorganic malodorous pollutant ammonia gas by ultraviolet light illumination

Examples

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Embodiment 1

[0044] A method for degrading inorganic odor pollutant ammonia gas by ultraviolet light irradiation, the specific steps are:

[0045]1) In a clean beaker, take 100 mL of nano-titanium dioxide sol solution (quantitatively unchanged) and 100 mL of copper chloride solution in a volume ratio of 1:1, and spray them evenly on the glass fibers successively. After the spraying is completed, put the sprayed glass fiber in a high-temperature furnace with a heating gradient of 5 °C / min from room temperature to 180 °C, and keep it for 12 hours. After closing the high-temperature furnace, wait for the temperature to cool to room temperature. spare in the device;

[0046] 2) the sheet-like photocatalytic material obtained is placed between the ultraviolet sterilization lamps in the photocatalytic reactor of the self-designed purifier device, and there are 28 8W ultraviolet lamps in the reactor (ultraviolet lamp Philips, the dominant wavelength is 254nm), and the reactor cabin is made of ma...

Embodiment 2

[0060] The specific experimental method is basically the same as in Example 1 of this part, except that the copper chloride solution is changed to a copper bromide solution.

Embodiment 3

[0062] The specific experimental method is basically the same as in Example 1 of this part, except that the copper chloride solution is changed to a copper sulfate solution.

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Abstract

The invention belongs to the technical field of photocatalytic degradation of pollutants, and particularly relates to a method for degrading inorganic malodorous pollutant ammonia gas by ultraviolet light illumination. A titanium dioxide photocatalyst is used as a substrate, metal salt is used, high-temperature calcination treatment is carried out, the surface property of the titanium dioxide catalyst is regulated and controlled, then a catalytic material is loaded on glass fibers, the glass fibers are internally arranged in a self-designed purifier device, and the purpose of efficiently degrading inorganic malodorous pollutant ammonia gas is achieved under ultraviolet light. According to the method, a catalytic material loaded with a copper salt modified titanium dioxide photocatalyst isadopted, and green, efficient and economical degradation treatment on inorganic malodorous pollutant ammonia gas is achieved through ultraviolet excitation. The method is mild in condition, simple incatalytic material preparation, excellent in treatment performance and remarkable in economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic degradation of pollutants, and in particular relates to a method for degrading inorganic odor pollutant ammonia gas by ultraviolet light irradiation. Background technique [0002] Sunlight is a composite light that includes three different wavelengths: ultraviolet, visible and infrared. Ultraviolet light is electromagnetic radiation with a shorter wavelength than visible light but longer than X-rays. Ultraviolet light has wavelengths in the range of 10-400 nm in the electromagnetic spectrum, which starts at the short-wave limit of visible light and overlaps with the wavelengths of X-rays. Compared with visible light, ultraviolet light has higher energy, and it has a strong ability to kill organisms and is often used for sterilization. At the same time, due to the high photon energy of ultraviolet light, it can open chemical bonds with high energy requirements. Compared with visible light,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01J23/72B01J23/755B01J23/06B01J35/06B01D53/58
CPCB01D53/8634B01D2255/802B01J23/06B01J23/72B01J23/755B01J35/004B01J35/06
Inventor 员汝胜徐春旺李铭铭张子重丁正新
Owner FUZHOU UNIV
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