why activated carbon filters are effective in removing odours?

1. Highly developed pore structure
Activated carbon filters are made from organic materials (coconut shells) that have been subjected to a high-temperature carbonisation and activation process. This process causes the activated carbon to form a large number of microscopic pores that increase its specific surface area. Through these pores, the activated carbon is able to adsorb more molecules, thus capturing the gases and odour sources present in the air.

2. Physical adsorption
The main mechanism of action of activated carbon filters is physical adsorption. Odour molecules in the air (e.g. cigarette smoke, food odour, pet odour, etc.) will enter the pores of the activated carbon through diffusion and collision, and interact with the surface of the charcoal particles. This interaction is mainly van der Waals forces, which allow odour molecules to be firmly trapped in the internal structure of the activated carbon, reducing their concentration in the air.

3. Chemisorption
In addition to physical adsorption, the surface of activated carbon may react chemically with certain compounds to form chemisorption. In this case, certain gas molecules will form strong chemical bonds with the chemical functional groups on the surface of the activated carbon and thus be removed. This mechanism is particularly important in the removal of some specific hazardous gases (e.g. certain volatile organic compounds).

4. Removal of volatile organic compounds (VOCs)
Activated carbon filters can effectively adsorb many volatile organic compounds, such as formaldehyde and benzene, which are often the source of odours in life. For example, these harmful gases may be emitted from new furniture or newly renovated houses. The widespread use of activated carbon can effectively reduce these odours and improve indoor air quality.

5. Regenerative
The adsorption capacity of an activated carbon filter is limited, but it can be regenerated by heating or other methods to restore its adsorption properties. Regenerating activated carbon under proper conditions can extend its service life and maintain its ability to remove odours.

6. Simple and effective use
The activated carbon filter is installed into the air purifier. People can filter shoe cabinets, bathrooms and other places with heavy odour according to their needs to achieve the effect of odour removal.

To sum up, activated carbon filter is a very effective odour remover, relying on its special structure, physical and chemical adsorption mechanism, it can successfully capture a wide range of airborne odour molecules, thus improving air quality and making the living environment more comfortable and healthy.