Is Charcoal Effective in Adsorbing Formaldehyde

Charcoal can be used to adsorb formaldehyde, but its formaldehyde removal effect is relatively average:
1. Ordinary charcoal has a certain adsorption capacity, but its adsorption capacity is unstable and easily affected by environmental changes. It may absorb other substances and even release formaldehyde adsorbed on charcoal again when it reaches saturation.
2. One type of product in charcoal is activated carbon, which has a better formaldehyde removal effect than ordinary charcoal. However, activated carbon has a smaller adsorption capacity, and it usually fills up after being left for a short time. Moreover, if there is too little, it will not be effective.
Overall, charcoal can adsorb formaldehyde, but among many methods of formaldehyde removal, the effect of charcoal on formaldehyde removal is not particularly good, and formaldehyde removal still requires opening windows for ventilation.