Classification Charcoal

Activated carbons are complex products which are difficult to classify on the basis of their behavior, surface characteristics and other fundamental criteria. However, some broad classification is made for general purpose based on their size, preparation methods, and industrial applications.

Extruded activated carbon combines powdered activated carbon with a binder, which is fused together and extruded into a cylindrical shaped activated carbon block with diameters from 0.8 to 130 mm. These are mainly used for gas phase applications because of their low-pressure drop, high mechanical strength, and low dust content. Also sold as CTO filter (Chlorine, Taste, Odor).

balance of size, surface area, and head loss characteristics.

Extruded activated carbon (EAC)
Extruded activated carbon combines powdered activated carbon with a binder, which is fused together and extruded into a cylindrical shaped activated carbon block with diameters from 0.8 to 130 mm. These are mainly used for gas phase applications because of their low-pressure drop, high mechanical strength, and low dust content. Also sold as CTO filter (Chlorine, Taste, Odor).

Bead activated carbon (BAC)
Bead activated carbon is made from petroleum pitch and supplied in diameters from approximately 0.35 to 0.80 mm. Similar to EAC, it is also noted for its low-pressure drop, high mechanical strength, and low dust content, but with a smaller grain size. Its spherical shape makes it preferred for fluidized bed applications such as water filtration.

Bead activated carbon is made from petroleum pitch and supplied in diameters from approximately 0.35 to 0.80 mm. Similar to EAC, it is also noted for its low-pressure drop, high mechanical strength, and low dust content, but with a smaller grain size. Its spherical shape makes it preferred for fluidized bed applications such as water filtration.