V. Adsorption method
Adsorption is the use of porous solids as an adsorbent, so that certain components of the material attached to the solid surface, to achieve air purification methods, including physical adsorption and chemical adsorption. The most representative adsorption method is activated carbon, which is the most effective method of air purification, and other diatom mud, nano-flavor card, methanol spray and so on.
However, the biggest problem with adsorbents is the saturation of adsorption, which requires desorption, otherwise the adsorption effect will be lost. In other words, if the trash is full, it will breed bacteria if it is not processed, and it cannot be installed.
Ⅵ. Photocatalytic Oxidation Technology
This is a technology that uses photochemistry and catalysts to cause and catalyze oxidation reactions to achieve clean air. The name is more difficult to understand, but when it comes to photocatalysts, I believe many people have heard of it.
Photocatalyst is a catalyst. Under the action of ultraviolet light, it can effectively degrade the toxic and harmful gases in the air, kill a variety of bacteria, and also have the functions of removing formaldehyde, deodorizing, anti-fouling, and purifying air. The purification principle is not good, but it is limited to the surface of the photocatalyst, so the actual effect is not ideal.
Ⅶ. ozone method
Ozone has strong oxidizing properties and it has obvious effects on sterilization and odor removal. Using ozone to purify air is an efficient method. However, ozone is toxic and cannot be used in the presence of living organisms.