They are all activated carbon, why is coconut shell activated carbon better?

Why do people say that coconut shell activated carbon is good when they are both activated carbon?

First of all, activated carbon made from coal has the characteristics of developed pore structure, good adsorption performance, large supply and low price. It is widely used in the purification of toxic gases, waste gas treatment, industrial and domestic water purification and treatment, solvent recovery, etc. The disadvantage of coal-based carbon is the potential metal ion content. In addition, if the hardness of coal-based carbon is not high enough, it is not the best choice in some applications that require frequent flushing of the bed and strict requirements for low wear of activated carbon, such as gold refining activity.

Wood-based activated carbon is mainly used in food, beverage, medicine and other fields. It is mainly in black powder or granular form in appearance. In terms of performance, it has large specific surface area, strong adsorption capacity, few impurities, high purity, and excellent decolorization, purification and purification functions. However, its strength is low and it is difficult to prepare into granular form. Or even if it is prepared into granular form, its decolorization performance is greatly reduced and the cost is greatly increased. Therefore, wood charcoal is difficult to use in processes using granular filter materials.

Finally, fruit shell activated carbon has better hygiene and safety. The adsorption of activated carbon mainly depends on the iodine value, and among the activated carbon categories, coconut shell activated carbon has the highest iodine value. As the variety with the highest specific surface area among fruit shell activated carbon, coconut shell activated carbon has good adsorption performance and high hardness.

It is often used for deodorization of food, beverages, alcohol, air purification activated carbon and high-purity drinking water, removal of heavy metals in water, dechlorination and liquid decolorization. It can also be widely used in solvent recovery and gas separation in the chemical industry. It has strong adsorption capacity, developed pore structure, large specific surface area, fast adsorption speed, high wear resistance and durability.