Particles activated by chemicals Activated carbon It is very porous, mostly in the range of micropore and mesopore. However, compared with activated carbon activated by water vapor and activated carbon activated by chemicals, the pore surface is less hydrophobic and more negatively charged. Take extruded and crushed granular activated carbon as an example: peat based extruded activated carbon can be made into varieties with different pore size distribution. Granular activated carbon with micropores is mainly used for gold recovery in gas phase applications. The varieties with both micropores and mesopores are mostly used for liquid phase applications, such as absorption of small and large molecular impurities in water purification.

Granular activated carbon based on crushed briquette has both micropores and mesopores, which can be used for many purposes. The granular activated carbon based on lignite or coconut shell has the same micropore and mesopore structure as the powdered carbon. The technical indicators of activated carbon are very important: the performance indicators of activated carbon products can be divided into physical performance indicators, chemical performance indicators of activated carbon, and adsorption performance indicators of granular activated carbon. The three performance indexes play a very important role in the selection and application of activated carbon. The main physical performance indicators of activated carbon include: shape, appearance, specific surface area, pore volume, specific gravity, mesh number, particle size, wear resistance, flotation rate, etc.