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Put formaldehyde-absorbing bamboo charcoal into a clean room, the formaldehyde will quickly evaporate, and the formaldehyde content per gram of bamboo charcoal will drop to 1.6 milligrams within 3 hours.
When the new home was just finished renovation, he bought several large bags of bamboo charcoal in the room to purify the air. It is said that these things can not only adsorb odors but also absorb invisible formaldehyde, especially for formaldehyde. Later, we also saw an upgraded version. Bamboo charcoal can also be made into handicrafts. While satisfying your appreciation for art, they quietly "clean" the air. Is bamboo carbon's ability really magical as advertised?
Some advertisements claim that bamboo charcoal has a strong adsorption capacity for formaldehyde and is supported by experiments. However, these experimental conditions can not help but make people skeptical. They all put bamboo charcoal in a nearly saturated formaldehyde vapor. The amount of formaldehyde adsorbed per gram of bamboo charcoal up to 68 mg is measured under this condition. Such an environment is arbitrary. Throw in a piece of wood can also be made into formaldehyde. The key question is whether bamboo charcoal can lock in the formaldehyde. The experimental results are disappointing. Once the formaldehyde-absorbing bamboo charcoal is placed in an empty room without formaldehyde pollution, the formaldehyde will be quickly released and the charcoal will be released within 3 hours. The formaldehyde content in the can be reduced to 1.6 milligrams --- the decontamination product suddenly became a source of pollution.
The so-called adsorption capacity of bamboo charcoal is mainly due to the fact that there are many micropore structures in micrometers in this amorphous carbon (distinguished from the crystal carbon of diamond, although the chemical composition is the same). Just as water can seep in the sand. Formaldehyde, water, ah, these ingredients can be infiltrated into these holes in the bamboo charcoal. However, as the experiment shows, in addition to containing formaldehyde in the tunnel, bamboo charcoal does not have any special mechanism to limit their freedom. Just as water can evaporate from the sand, formaldehyde can also be volatilized from bamboo charcoal. The researchers who conducted the bamboo charcoal adsorption formaldehyde experiment also pointed out that the adsorption of formaldehyde by activated carbon is not stable, and it is even worse than the water molecules. In simple terms, if there is a lot of water vapor in the room, you can squeeze out the formaldehyde adsorbed on bamboo charcoal. Of course, if you add material that can react with formaldehyde in the pores of bamboo charcoal, you can make it a real adsorbent, but you cannot do it with current technology.
Many advertisements intentionally mask these problems, and generalize the special "adsorption effect" of activated carbon materials such as bamboo charcoal, and more in the context of breaking the rules and sloppy eyes.
As for formaldehyde, it can be treated with green plants such as spider plants. These plants can use absorbed formaldehyde as a raw material for the synthesis of organic acids, sugars, and amino acids, and they are stored in the body. Of course, it is the most safe strategy to avoid decorative materials with high formaldehyde content. The most effective method of removal is to use formaldehyde scavenger developed by pure natural Chinese herbal extract to remove formaldehyde. It is pure and natural green, free of chemical agents, non-toxic and non-polluting, and has no toxic or side effects on the human body. In addition to the fast and stable formaldehyde lasting! ()
Decoration in addition to taste misunderstanding: bamboo charcoal absorption of formaldehyde? Decontamination may become contaminated!
The bamboo charcoal is placed in a nearly saturated formaldehyde vapor with a formaldehyde adsorption capacity of up to 68 mg per gram of bamboo charcoal.