Important Properties of Activated Carbon

Important Properties of Activated Carbon

Posted 3 years ago in Other.

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There are many different properties and characteristics of activated carbon, and understanding these factors will help you understand how the material is measured and analyzed.


Iodine Number

Iodine adsorption is used to measure the effectiveness of activated carbon. During this test, activated carbon is added to a liquid holding a specific amount of iodine. The carbon is mixed thoroughly until it has dissolved into the solution.activated charcoal powder manufacturer After a few minutes, the solution is filtered into another container, removing the charcoal particles and allowing the liquid to pass through. The iodine number is a gauge of the amount of iodine removed from the liquid. Essentially, the higher the number, the more iodine was removed.


Pore Diameter

The diameter of the pores on and inside activated carbon will make a significant difference in how the materials performs. Pore diameter can determine the specific use of a carbon, as activated carbon with more micropores (smaller pores) can be effective for removing low concentrations of organic matter found in water. Activated carbon with both small and large pores are very versatile and can be used to remove both chlorine and a wide variety of organic matter at the same time.


Surface Area

The surface area is another important property that is often cited on activated carbon. Depending on the raw material, the activation process, and other factors, the surface area will vary, giving the charcoal more or less adsorption potential. Surface area for activated carbon is often measured using a BET nitrogen adsorption test.



Density will affect the volume activity. Generally, a higher density will indicate a higher-quality wanyang  activated carbon. There are numerous ways to define density, including real density, which is the density excluding the voids of the material, as well as particle density, which is the measured density of the carbon particles alone. There is also wetted density, apparent density, bed or bulk density, and tamped density. All of these density measurements provide specific data on activated carbon performance.