Products Description
Coal based granular activated carbon has unique advantages due to its high strength, well-developed pores, large specific surface area, and especially large microporous volume. Coal based activated carbon has strong adsorption capacity for various organic matter, free chlorine in water, and harmful gases in the air. It is an excellent adsorbent for deep purification of urban drinking water and is applied to remove bacteria and toxic gases in the air.
Coal based activated carbon has developed pore structure, good chemical stability, and mechanical strength, making it an excellent broad-spectrum carbon adsorption material.
According to different uses, activated carbon can be divided into various uses such as water purification, air purification, decolorization, solvent recovery, injection, and protection.
Due to its acid resistance, alkali resistance, heat resistance, and the convenient regeneration of granular activated carbon after adsorption saturation, activated carbon is an essential carbon adsorption material in modern industrial production and environmental protection.
The adsorption of solute molecules in water by coal based granular activated carbon is a complex process that is the result of a combination of several forces, including ion attraction, van der Waals force, and chemical impurity force. 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 the adsorption capacity of 60% to 80% coal based granular activated carbon.
Rapid diffusion is the process of solute molecules diffusing in large pores with low resistance and uniformly distributed radially within carbon particles. These large pores generate radial diffusion resistance. When molecules diffuse further from the macropores into the micropores connected to the macropores, they are extremely slow due to the significant resistance generated by the narrow pore size. Micropores are also uniformly distributed within the carbon particles, but do not constitute radial diffusion resistance.
The factors affecting the adsorption of coal based granular activated carbon involve solute molecular polarity, molecular weight size, and spatial structure, which depend on the characteristics of the water quality of the source. Coal based granular activated carbon has selective adsorption properties for different substance molecules.
Characteristics for coal based activated carbon granular：
1.Large surface area
2.High pore volume
3.Strong absorption capacity
4.High efficiency
