Preparation and application method of an ozone-enhanced catalytic material

Abstract

The invention relates to a preparation and application method of an ozone-enhanced catalytic material, specifically boron-modified mesoporous carbon airgel loaded with Fe 2 o 3 and C O3 o 4 Ozone-enhanced catalytic materials, adding boric acid and iron solution to the raw materials to obtain boron-modified iron-loaded mesoporous carbon airgel precursors, and aerogels obtained under the protection of argon, as C O3 o 4 The carrier, under capillary action, tricobalt tetroxide penetrates into the interior of the carbon airgel gap, and obtains a boron-modified mesoporous carbon airgel catalyst loaded with iron and tricobalt tetroxide. Bubbles, hydrogen peroxide or ozone microbubbles / hydrogen peroxide are fully mixed with wastewater, fully contacted on the surface of boron-modified loaded iron and tricobalt tetroxide mesoporous carbon airgel catalyst, and generate a large number of hydroxyl radicals to further treat organic pollutants in water. The invention has the characteristics of large specific surface area, high porosity, etc., and has high-efficiency catalytic characteristics under the synergistic catalytic action of iron and cobalt.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater and domestic sewage treatment, and in particular relates to a preparation and application method of an ozone-enhanced catalytic material. Background technique [0002] In today's society, due to the rapid growth of urban population and rapid economic development, water demand has increased, water pollution has intensified, and water resources are in short supply. Although my country has the fourth largest fresh water reserves in the world, the per capita water resources are only 2300m 3 Therefore, our country is still listed by the United Nations as one of the 13 water-poor countries in the world. In addition, my country's water pollution is also quite serious: at present, 45% of my country's groundwater is polluted, and more than 90% of cities have serious water pollution. Water pollution further reduces the available fresh water resources. [0003] In response to the water short...

AI Technical Summary

Problems solved by technology

Second, ozone in water hydroxide (OH - ), organic pollutants or some inorganic substances and other initiators to generate hydroxyl radicals (OH ) and indirectly interact with organic pollutants in water. The reaction speed is fast and the selectivity is low. The kinetic constant of the reaction is 10 8 -10 10 Between L / (mol·s)

[0006] Invention patent CN 101380569 B prepares a three-dimensional ordered macroporous carbon material supported titanium dioxide catalyst through capillary and ultrasonic dispersion. The carrier is mainly activated carbon particles obtained by high temperature heat treatment, which has the characteristics of open pores and sufficient contact. , the mutual collision and friction between the granular activated carbon will lead to the wear of the carrier and the loss of titanium dioxide

Treatment of high-concentration zinc chloride waste liquid becomes a limiting factor for the production of this type of catalyst

[0007] In addition, the ozone catalysts on the market generally only support one metal compound with catalytic activity. When the catalytic activity of this compound becomes invalid due to poisoning or fouling, it must be "resurrected" or replaced, which affects the continuous operation of production.

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