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A flat-plate photodegradation domestic waste leachate catalyst and preparation method thereof

A domestic garbage and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as unutilized light, energy waste, low catalytic activity, etc., to save raw materials and costs Inexpensive, good catalytic activity effect

Active Publication Date: 2020-11-17
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in sunlight, ultraviolet light only accounts for a small amount (about 4%), while visible light accounts for 43%, so semiconductor materials only have very low catalytic activity under sunlight, and most of the light energy has not been utilized. , resulting in a waste of energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of catalyst paste

[0029] ①Preparation of non-metal element-doped nano-titanium dioxide:

[0030] 100 parts by weight of nano-titanium dioxide is placed in an exhaust pipe of a domestic garbage pyrolysis furnace at 450° C. for 15 hours to react to obtain C- and P-doped nano-titanium dioxide powder.

[0031] ② Kneading of catalyst paste

[0032] Weigh 50 parts by weight of the non-metal element-doped nano-titanium dioxide powder obtained in the above step ①, 10 parts by weight of kaolin, 5 parts by weight of hydroxypropyl methylcellulose, and 30 parts by weight of deionized water into the mixer Mix and stir to obtain a catalyst paste.

[0033] (2) Place the catalyst paste obtained in step (1) on a stainless steel mesh plate, and after roll coating, crimping, and shearing, dry it in a blast drying oven at 110°C for 2 hours, and put it in a muffle furnace at 550°C. After roasting at ℃ for 5 hours, a flat-plate catalyst was obtained. The weight percentag...

Embodiment 2

[0036] (1) Preparation of catalyst paste

[0037] ①Preparation of non-metal element-doped nano-titanium dioxide:

[0038] 100 parts by weight of nano-titanium dioxide is placed in an exhaust pipe of a domestic garbage pyrolysis furnace at 550° C. for 20 hours to react to obtain C- and N-doped nano-titanium dioxide powder.

[0039] ② Kneading of catalyst paste

[0040] Weigh 50 parts by weight of the non-metal element-doped nano-titanium dioxide powder obtained in the above step ①, 10 parts by weight of kaolin, 10 parts by weight of hydroxypropyl methylcellulose, and 35 parts by weight of deionized water into the mixer Mix and stir to obtain a catalyst paste.

[0041] (2) Place the catalyst paste obtained in step (1) on a stainless steel mesh plate, and after roll coating, crimping, and shearing, dry it in a blast drying oven at 110°C for 2 hours, and put it in a muffle furnace at 550°C. After roasting at ℃ for 5 hours, a flat catalyst was obtained. The weight percentages of...

Embodiment 3

[0044] (1) Preparation of catalyst paste

[0045] ①Preparation of non-metal element-doped nano-titanium dioxide:

[0046] 100 parts by weight of nano-titanium dioxide is placed in an exhaust pipe of a domestic waste pyrolysis furnace at 600°C for 20 hours to react to obtain C, N, and S-doped nano-titanium dioxide powder.

[0047] ② Kneading of catalyst paste

[0048]Weigh 50 parts by weight of the non-metal element-doped nano-titanium dioxide powder obtained in the above step ①, 5 parts by weight of kaolin, 10 parts by weight of hydroxypropyl methylcellulose, and 35 parts by weight of deionized water into the mixer Mix and stir to obtain a catalyst paste.

[0049] (2) Place the catalyst paste obtained in step (1) on a stainless steel mesh plate, and after roll coating, crimping, and shearing, dry it in a blast drying oven at 110°C for 4 hours, and put it in a muffle furnace at 550°C. After roasting at ℃ for 5 hours, the flat catalyst was obtained. The weight percentages of ...

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PUM

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Abstract

The invention belongs to the field of environment protection and environment catalysis, and particularly relates to a non-metal-element doped modified titanium oxide catalyst used for photodegradation of household garbage leachate. The catalyst adopts household garbage pyrolysis gas as a non-metal source and a heat source to prepare the non-metal-element doped modified titanium oxide, and then the flat-plate type catalyst is prepared by mixing, rolling, coating, pleating, cutting, drying and calcinating. The catalyst is low in cost, high in photocatalytic activity, high in stability, and capable of efficiently degrading the household garbage leachate under irradiation of sun light and common lamplight, and has a good application prospect in the field of pollutant degradation.

Description

technical field [0001] The invention belongs to the field of environmental protection and environmental catalysis, and in particular relates to a flat-plate photodegradation domestic garbage leachate catalyst and a preparation method thereof. Background technique [0002] During the stacking and landfilling of municipal solid waste, due to the effects of compaction, fermentation, and precipitation seepage, a high-concentration organic wastewater, namely landfill leachate, will be produced. Landfill leachate contains a large number of toxic and harmful substances, including phenolic compounds, aniline compounds, chlorinated aromatic compounds, phosphate esters, and non-chlorinated aromatic compounds such as naphthalene and anthracene. Therefore, if the landfill leachate is not treated and discharged directly, it will cause serious pollution to natural water bodies and the environment. [0003] Photocatalytic oxidation technology is an emerging landfill leachate treatment tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/72C02F1/30
CPCY02W10/37
Inventor 陆强张智博叶小宁陈晨李文涛董长青
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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