The type of activated carbon

The type of activated carbon ， according to the selected raw materials have wood, putamina, coir, coal, petroleum and other crops ； activated carbon is the shape Powdered, size, cylindrical and Flake ； Physical methods of steam activation and activation of its chemical activation ZnCl2 。

Cyanide wastewater treatment normally used activated carbon Coal ， low prices and large specific surface area ； filtered tap water used for the absorption of coconut shell activated carbon and putamina carbon, Better wear intensity, the speed of absorption \high capacity, good taste, General use of activated carbon absorption capacity of benzene, iodine, and the total surface area and porosity said activated carbon adsorption properties, Its technical parameters is bigger, the adsorption capacity is bigger and adsorption more powerful.

Activated Carbon Adsorption

The adsorption is activated carbon main feature, when cyanide wastewater through activated carbon , activated carbon surface of the corresponding wastewater surface, two buildings interval is a surface layer interface, it is at this interface area, bring adsorption. There is a physical adsorption and chemical adsorption, Take the example adsorba Au , first, the Au (CN) 2 form Adsorption ,later Au (Cn) 2 oxidized decomposition AuCn.

Activated Carbon Adsorption Au and the adsorption of cyanide is different, Cyanide is a heavy metal ions be adsorbed; but free cyanide is a HCN form of the adsorbed; so reduced wastewater pH values, cyanide in the activated carbon adsorption rate high, adsorption is surface diffusion of the carbon rate speed of cyanide and Carbon from spreading to the outer and inner surface is occupy the speed.