It can be treated, or activated, to increase its ability to adsorb various substances such as gases, liquids, or dissolved substances (adsorbates) on the surface of its pores, by reheating with oxidizing agent or other chemicals to break it into a very fine powder (Tran, 2002). Activated carbon is cost-effective in that the same high-temperature process that is used to manufacture carbon can be used to reactivate the carbon for reuse. In the regeneration process, adsorbed organic chemicals are thermally destroyed, and the carbon can then be recycled for reuse.