An activated carbon filter, also known as activated charcoal filter, is a type of filter commonly used in air and water purification systems. It is made from activated carbon, which is a form of carbon that has been processed to have a large surface area and a high degree of porosity.
The activation process involves treating carbon materials with high temperatures and chemical agents to create tiny pores and increase the surface area. This results in activated carbon with a vast number of microscopic pores and an expanded internal surface area.
The unique structure of activated carbon enables it to effectively adsorb and capture various impurities, pollutants, and contaminants present in air or water. When air or water passes through the activated carbon filter, the contaminants present in the medium become attracted to the porous surface of the activated carbon and adhere to it.
Activated carbon filters are particularly effective in adsorbing organic compounds, odors, volatile organic compounds (VOCs), chlorine, certain chemicals, and some heavy metals. They are commonly used in air purifiers, water filtration systems, gas masks, and many other applications where removal of impurities and odors is desired.
It's worth noting that activated carbon filters have a finite capacity, and over time, they can become saturated with adsorbed contaminants. Therefore, regular replacement or regeneration of the activated carbon is necessary to maintain its efficiency.