Preparation method of organic pollutant photolysis catalyst

A technology for organic pollutants and photodegradation, which is used in catalyst activation/preparation, physical/chemical process catalysts, water pollutants, etc. problem, to achieve the effect of low operating cost and no secondary pollution

Active Publication Date: 2017-04-26
青岛海科绿邦环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, take photocatalyst as an example, or use pure TiO 2 Photocatalyst is an active component, resulting in photocatalyst activity only corresponding to ultraviolet light, and TiO 2 Photocat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Pre-treat the structured ceramic carrier first: put a certain volume of structured ceramics into the laser drilling machine, adjust the diameter, array and power of the laser beam, and drill small holes with a diameter of Φ0.2 mm in a square array; (2) Put the laser-drilled structured ceramic carrier into an ultrasonic reactor, and use 0.2M KMnO 4 Soak in aqueous solution for 2.0 hours, then place it for 24 hours, and then wash with water until the pH of the washing solution is ≥ 6.5; (3) Carry out loading treatment on the above-mentioned structured ceramic carrier, the process is as follows: dissolve 30ml tetrabutyl titanate in 100ml absolute ethanol, After stirring, add 20ml of ethylene glycol and 10ml of commercially purchased graphene sol and 10ml of Bi(NO 3 ) 3 • 5H 2 O and NH 4 VO 4 (molar ratio 1:1) ethanol mixture, stirred at 30°C for 2h to obtain a mixed colloidal solution, then added 150ml of the treated structured ceramic carrier into the mixed collo...

Embodiment 2

[0014] Loading BiVO on structured ceramic supports 4 -TiO2-graphene as an industrial organic pollutant photodegradation catalyst for the degradation of methanol as an example. The activity test is carried out in a fixed-bed reactor of Φ50 x 1000mm. Methanol is used as the simulated compound of industrial organic pollutants. The composition of the simulated industrial organic pollutant waste gas is: methanol 800~2000mg / m 3 , O 2 0~10%, water vapor is 0~12%, and the rest is N 2 balance. The removal reaction temperature is 40°C~120°C, normal pressure, and the space velocity of the photocatalyst is 800-5000 h -1 , using 300W UV emission lamps and visible light lamps, the final test of its methanol degradation rate reached 99%.

Embodiment 3

[0016] Loading BiVO on structured ceramic supports 4 -TiO 2 - Graphene photodegradation catalyst for industrial organic pollutants degrades industrial wastewater as an example. The COD of its wastewater is 1200mg / L, and its COD digestion activity test is carried out in a Φ50 x 1000mm fixed-bed reactor at a reaction temperature of 20°C~60°C and normal pressure, and the space velocity of the photocatalyst is 1-10 h -1 , using 30W H-type UV emission lamps and visible light lamps, the final test wastewater COD degradation rate reached 98%.

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PUM

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Abstract

The invention discloses a preparation method of an organic pollutant photolysis catalyst. The preparation method is characterized by comprising steps as follows: regular ceramic is taken as carriers, are subjected to array hole formation with laser and activating treatment with potassium permanganate and then ultrasonically load sol-gel containing BiVO4, TiO2 and graphene, a product is subjected to vacuum drying and is subjected to high-temperature calcination finally, and industrial organic pollutant photolysis catalyst based on BiVO4-TiO2-graphene loaded regular ceramic is prepared. The photolysis catalyst can simultaneously release molecular radicals through plasma discharge and produce superoxide radicals and hydroxyl radicals through photocatalysis under radiation of a plasma emission (UV) light, thereby efficiently and thoroughly degrading toxic, harmful and stink industrial waste gas and industrial organic pollutants containing sulfur, nitrogen, ammonia, phenol, PAHs (polycyclic aromatic hydrocarbons), pesticides, antibiotics, viruses, bacteria and the like.

Description

technical field [0001] The invention relates to a preparation method of a photodegradation catalyst, in particular to a preparation method of an industrial organic pollutant photodegradation catalyst with regular ceramics as a carrier. Background technique [0002] As we all know, most of the organic pollutants in industrial waste gas and wastewater have odorous, toxic, harmful and teratogenic properties, which have become the main culprits affecting people's health and atmospheric smog. At present, the technologies for treating such industrial waste gas and wastewater mainly include: activated carbon adsorption method, photocatalysis method, plasma method, catalytic combustion method and biological method, etc. Most of the technological processes adopted are a series of different physical, chemical and biological processes in series. and other processing techniques. For example, take photocatalyst as an example, or use pure TiO 2 Photocatalyst is an active component, resu...

Claims

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Application Information

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IPC IPC(8): B01J23/22B01J35/10B01J37/02B01J37/08B01J37/34C02F1/30B01D53/86C02F101/30
CPCB01D53/86B01J23/002B01J23/22B01J35/004B01J35/1004B01J37/0211B01J37/0213B01J37/082B01J37/343B01J2523/00C02F1/30C02F2101/30C02F2305/10B01J2523/47B01J2523/54B01J2523/55
Inventor 李子真杨光李青云李春虎
Owner 青岛海科绿邦环保科技有限公司
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