Activated carbon

Activated carbon is a carbon material with a large specific surface area and strong adsorption and decolorization capabilities. In the 19th century, people used it to decolorize, deodorize and purify sugar, wine and water. Bone charcoal has been used for water filtration for more than 100 years. During the First World War, activated carbon was used to make gas masks. By the 1990s, it was widely used in sewage treatment, organic solvent concentration and recovery, air purification and other environmental protection, gold extraction and other fields.