Carbon is typically used in a column contactor. The columns are called adsorbers and are designed specifically for air and water. The design is engineered for loading (amount of fluid per area cross section), contact time (a minimum contact time is needed to insure required removal) and pressure drop through the adsorber (needed to size container pressure rating and fan/pump design rating). The standard General Carbon adsorbers are pre-engineered to meet all of the requirements for good adsorber design. We can also design special designs for applications outside the normal range.