Gasfasefiltratie

Gasfasefiltratie, also known as activated carbon filtration or adsorptie, is a process used to remove airborne contaminants from gas streams. It primarily relies on the principle of adsorption, where gaseous molecules adhere to the surface of a porous solid material. Activated carbon is the most common adsorbent due to its high surface area and affinity for a wide range of organic and inorganic pollutants.

The process typically involves passing the contaminated air or gas through a bed of activated carbon granules or pellets. As the gas flows through the filter, volatile organic compounds (VOCs), odors, and other gaseous impurities are trapped on the carbon's surface. The effectiveness of the filter depends on factors such as the type of activated carbon, the concentration of contaminants, the contact time between the gas and the carbon, and the presence of moisture.

Gasfasefiltratie is widely employed in various applications, including industrial emission control to reduce air pollution, indoor air quality improvement in buildings and homes to remove odors and harmful chemicals, and in process industries to purify gases. It is particularly effective for removing substances with low molecular weight and high vapor pressure. When the activated carbon becomes saturated with contaminants and can no longer adsorb effectively, it needs to be replaced or regenerated, depending on the specific application and the type of contaminants adsorbed. Regeneration can sometimes be achieved by heating the carbon to desorb the trapped pollutants.