Activated Carbon Filter is used in water purification to adsorb volatile, colloidal, and reactive organic compounds from feed water, as well as a technique for removing active free chlorine. Activated carbon are made from organic materials having a high carbon content such as coconut shell, coal, wood and peat, etc… The carbon based materials is converted to activated carbon by thermal decomposition in a furnace using controlled atmosphere and heat.

Activated carbon is a highly porous material which has an incredibly large surface area per unit volume. Adsorption is the mechanism by which activated carbon removes pores provide the surface essential forcontaminants from water. And the walls of the submicroscopic adsorption. (The surface area of a game of activated carbon is about 1000 m2) Physical adsorption occurs because all molecules exert attractive forces, especially molecules at the surface of a solid (pore walls of carbon), and these surface molecules seek other molecules to adhere to.

The large internal surface area of carbon has many attractive forces which work to attract other molecules. Thus, contaminants in water are adsorbed to the surface of carbon by surface attractive forces similar to gravitational forces.