Air purification of activated carbon is an internationally recognized efficient adsorption material, as early as the "First World War", it was used in gas masks. Activated carbon is widely used in automotive or indoor air purification. Activated carbon is a porous carbon-containing material, its well-developed pore structure makes it have a large surface area, so it is easy to fully contact with the poisonous and harmful gases in the air, and the powerful adsorption force field around the activated carbon pore will immediately inhale the poisonous gas molecule into the hole, so the activated carbon has very strong adsorption capacity is also the main technology to remove gaseous contaminants. Active carbon adsorption technology is mainly divided into two types: physical adsorption and chemical adsorption.
Physical adsorption is mainly aimed at macromolecular organic gases (such as benzene, such as TVOC) through the micro-pore structure of activated carbon adsorption of these macromolecules pollutant. Chemical adsorption mainly for small molecules of gaseous pollutants such as (formaldehyde, hydrogen sulfide, nitrogen oxides, etc., because the small molecule gas is easily removed after the formation of two of pollution, so the chemical treatment of activated carbon, so that the adsorption of gas and chemical composition reaction, so as to achieve adsorption effect.
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