Coal-based granular activated carbon has a strong adsorption capacity for various organic matter in water, free chlorine and harmful gases in the air.
wood activated carbon powder It is an excellent adsorbent for the deep purification of urban drinking water and is used to remove bacteria and poisonous gases in the air. Coal-based activated carbon has developed pore structure, good chemical stability and mechanical strength, and is an excellent carbonaceous adsorption material.
According to the different appearance, coal-based activated carbon can be divided into coal-based granular activated carbon and coal-based powdered activated carbon, and granular activated carbon is divided into coal-based formed carbon, including columnar carbon, briquette (or compressed carbon) and spherical carbon And raw coal crushed activated carbon.
Coal-based activated carbon has the advantages of high strength, developed pores, large specific surface area, especially large micropore volume. Because of its acid resistance, alkali resistance, and heat resistance, and the granular activated carbon can be easily regenerated after the adsorption is saturated, activated carbon is an indispensable carbonaceous adsorption material in modern society's industrial production and environmental protection.
The adsorption of solute molecules in water by coal-based granular activated carbon is a complex process, which is the result of the combined effects of several forces, including ion attraction, van der Waals force, and chemical impurities.
According to the dual-rate diffusion theory of adsorption, adsorption is a dual-rate process consisting of two stages: rapid diffusion and slow diffusion. The rapid diffusion is completed within a few hours, exerting 60% to 80% of the adsorption capacity of coal-based granular activated carbon. Rapid diffusion is a process in which solute molecules diffuse in large pores with small resistance evenly distributed along the radial direction of the carbon particles. These large pores create radial diffusion resistance.
When the molecules from the macropores further enter the micropores communicating with the macropores and diffuse, they are extremely slow due to the great resistance generated by the narrow pore size. The micropores are also evenly distributed in the carbon particles, but they do not constitute radial diffusion resistance.
coal pellet activated carbon The factors affecting the adsorption of coal granular activated carbon involve solute molecular polarity, molecular weight, and spatial structure, which depend on the characteristics of the water source. Coal-based granular activated carbon has selective adsorption to different substance molecules.
Coal-based granular activated carbon has a strong adsorption capacity for various organic matter in water, free chlorine and harmful gases in the air.wood activated carbon powder It is an excellent adsorbent for the deep purification of urban drinking water and is used to remove bacteria and poisonous gases in the air. Coal-based activated carbon has developed pore structure, good chemical stability and mechanical strength, and is an excellent carbonaceous adsorption material.
