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Activated carbon is a kind of black porous solid carbon, which is produced by pulverizing, forming or carbonizing and activating coal with uniform coal particles. The main component is carbon, and contains a small amount of oxygen, hydrogen, sulfur, nitrogen, chlorine and other elements. The specific surface area of ordinary activated carbon is between 500 and 1700m2/g. It has strong adsorption performance and is a widely used industrial adsorbent.

Formaldehyde itself has strong chemical activity, and its half-life in the environment is generally within a few hours. Generally, it will not have a high concentration outdoors and is not a major pollutant. However, for health, since most people spend most of their time indoors, there are many sources of formaldehyde release indoors, and the indoor concentration is generally higher than outdoor. If it cannot be handled in time, it may cause greater harm. .

The porous structure of activated carbon provides a large amount of surface area, which makes it easy to achieve the purpose of absorbing impurities such as formaldehyde. A large number of molecules on the activated carbon can generate a large gravitational force, so as to achieve the purpose of attracting harmful gases in the air into the pores. Using this principle, we can filter harmful substances such as formaldehyde and benzene in the air. The more pores of activated carbon, the higher the adsorption performance. It is recommended to choose activated carbon with low density, light hand feel, and large volume of equal weight. In addition, the smaller the activated carbon particles, the larger the contact area with air, the larger the specific surface area, and the better the adsorption performance.

How to make activated carbon adsorb formaldehyde effectively? To use ventilation and ventilation, in addition to stacking activated carbon at the source of the release, it is also necessary to measure its concentration frequently, and it is necessary to replace it if it is found to be saturated. One point first. The formaldehyde in the renovated home is a process of continuous release. This shows that the control of formaldehyde pollution is also a continuous process.

Where does formaldehyde in home decoration mainly come from? A large part of it comes from the cheap glue in the artificial board – urea formaldehyde resin (as long as it is not a raw wood, it can be considered as artificial board, composite floor,) In addition, gypsum board, paint, plastic products, adhesives are also in It is possible that it contains formaldehyde, just to say that it is much lower compared to the amount of artificial boards. Therefore, activated carbon needs to be placed for a long time and adsorbed for a long time in order to have good purification results.