Types of activated carbon
Activated carbon can be classified according to the form, raw material, use, and activation method as follows
① Classification by form
| Smashed form |
irregular form with sizes of 3 ~ 200mesh |
| Powder form |
generally the size is 200mesh or less |
| Figuration form |
assembly carbon, standard size, mostly round or columnar |
| Fiber form |
referred to as ACF and in cloth condition |
② Classification by raw material
| Plant group |
coconut shell, wood, sawdust, charcoal, etc |
| Goal group |
flaming coal, anthracite, brown coal, peat, etc |
| Oil group |
oil residue, sulfuric acid sludge, oil carbon |
| Etc |
pulp waste fluid, synthetic resin waste, organic waste |
③ Classification by usage
| Air |
selectively adsorb elements in air or gas for removal |
| Liquid |
selectively remove elements in water or liquid |
| Catalyst |
used as a catalyst and an indirect carrier utilizing activated carbon properties |
| Etc |
used for medical purposes after refining |
④ Classification by activation method
| Gas activation |
It is revitalized by various oxidizing gases (water vapor, carbon dioxide, air, etc.) at a high temperature gas activation reaction of about 800~1100℃, and the adsorption performance depends on the chemical properties and concentration of the oxidizing gas, reaction temperature, activation time, amount contained in raw materials It is determined by the type, etc. and is largely manufactured using rotary and multi-stage furnaces. |
| Chemical activation |
As an activation method for chemical treatment using acids such as phosphoric acid and sulfuric acid, the vapor activation method, which is a gas activation method, is widely used due to the complexity of the manufacturing process, device corrosion, secondary pollution, and economic efficiency. |