How do activated carbon filters work?
How do activated carbon filters work? Activated carbon filters, sometimes referred to as charcoal filters, contain small pieces of carbon in granular or lumpy form that have been treated to be very porous. The surface area of just 4 grams of activated carbon is equivalent to a soccer field (6,400 square meters). It is this enormous surface area that allows activated carbon filters to adsorb (and essentially remove) pollutants and other substances very effectively. As water flows through the activated carbon filter, chemicals adhere to the carbon, resulting in a purer water output. The effectiveness depends on the flow rate and temperature of the water. Therefore, most smaller activated carbon filters should be used with low pressure and cold water. In addition to surface area, activated carbon filters may have varying capacities in terms of the size of contaminants removed. One factor is the quality of activated carbon with coconut shells proven to have the best efficiency. Activa...