What is the activation process of activated carbon?

Activated carbon is a high-quality adsorption material, and the activation process during its manufacturing has a significant impact on its performance. Activation refers to the process of converting raw coal, wood or other organic substances into activated carbon. During the activation process, mainly through physical or chemical means, the organic substances in the raw materials are completely volatilized, leaving a carbonaceous matrix, thereby forming activated carbon. The activation process mainly consists of two types: physical activation and chemical activation.

Physical activation mainly involves heating raw materials at high temperatures to cause them to carbonize and open pores. Chemical activation, on the other hand, involves creating pores or generating new functional groups on the surface of the carbon matrix through the action of chemical reagents, thereby enhancing the adsorption performance of activated carbon.

In the manufacturing process of activated carbon, secondary activation is also a very important technique. Secondary activation refers to the further heating treatment of activated carbon after its initial activation. This can further increase the pore structure of activated carbon and improve its adsorption performance. Through secondary activation treatment, the specific surface area of activated carbon can be increased, and the uniformity of its pore structure can be enhanced, thereby improving its adsorption capacity and efficiency.

The influence of secondary activation on the pore structure of activated carbon is mainly reflected in two aspects. Firstly, secondary activation can increase the pore structure of activated carbon, making it have more and more uniform micropores and mesopores, thereby enhancing its adsorption capacity and speed. Secondly, secondary activation can improve the pore structure distribution of activated carbon, making it more suitable for the adsorption of various adsorbed substances and enhancing its adsorption selectivity.

Overall, the activation process and secondary activation process in the manufacturing of activated carbon have a significant impact on the adsorption performance of activated carbon. The correct activation process can endow activated carbon with higher adsorption performance and a wider range of applications. Therefore, in the production of activated carbon, strengthening the control and optimization of the activation process is of great significance for enhancing the performance and application effect of activated carbon. Activated carbon, as an important environmental protection and resource-saving material, has broad application prospects in various fields.