Carbon filters is a process where the pollutants adhere to the carbon particles as the water or air passes through it.
Useful for purifying water and purifying the air of contaminants. By removing offending odors from pipes attached to home or on tank water.
More commonly used for water purification, air filtering and industrial gas processing. For example the removal of siloxanes and hydrogen sulfide from biogas.
Carbon Water Filters are used in a number of other applications. Including some methods of coffee decaffeination. And in the recovery of precious metals, especially gold.
In water purification, activated carbon removes impurities and contaminants through the chemical process of adsorption. But it is used in a wide range of applications besides water filtration.