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Adsorption principle and characteristics of activated carbon adsorption box

Updated: Jul 3, 2023

What is the adsorption principle of activated carbon in the activated carbon adsorption box?

The adsorption principle of activated carbon in the activated carbon adsorption box;

Activated carbon is a very fine carbon particle with a large surface area. There are pores in the carbon particle. When these impurities encounter fine pores and are adsorbed, they have a purifying effect, and the adsorption effect is very high at the beginning of application, but as time goes by, the adsorption capacity of activated carbon will be weakened to varying degrees, and the adsorption effect will also decline, assuming that the water quality is turbid , high water content, the activated carbon will soon lose its filtering function, so the activated carbon should be cleaned or replaced on time.



The size of activated carbon particles also affects the adsorption capacity. Generally speaking, the smaller the activated carbon particles, the larger the filtration area, so the total area of powdered activated carbon is large and the adsorption effect is good. However, powdered activated carbon simply follows the water flow, which is difficult to control and is rarely used. Selected, granular activated carbon is not easy to move because of the formation of particles, and impurities such as water are not easy to block in the filter layer of activated carbon. It has strong adsorption capacity and is easy to carry and replace.


Because the activated carbon adsorption box will desorb, there will be no secondary pollution, and the activated carbon in the activated carbon adsorption box will not need to be replaced in the future, so there will not be a lot of hazardous waste.


The main factors affecting the adsorption of activated carbon adsorption box are as follows:

1. The adsorption capacity of activated carbon is proportional to the time of contact with water. The longer the contact time, the better the quality of filtered water. Note: the filtered water should flow out of the filter layer slowly, and the new activated carbon should be used for the second time. Wash it before use, otherwise ink black water will flow out.

2. The characteristics of activated carbon The larger the surface area, the stronger the adsorption capacity; activated carbon is a non-toxic molecule, which is easy to adsorb non-polar or low-property adsorbents. The size of activated carbon particles, the structure and distribution of pores and the external chemical properties have a great influence Adsorption also plays a big role.

3. The properties of the adsorbate depend on its solubility, the size and degree of unsaturation of the adsorbate molecule, the concentration of the adsorbate, etc.

4. The PH value of wastewater activated carbon generally has a better adsorption rate in acidic solution than in alkaline solution. PH value will affect the existence and solubility of adsorbate in water, and then affect the adsorption effect.


The activated carbon adsorption box is an economical and practical waste gas purification and treatment device, which is generally used for waste gas treatment in the chemical industry, but also used in electromechanical, automobile, petroleum and other industries.


The characteristics of activated carbon adsorption box adsorption:

1. It occupies a small area (unlike other chemical equipment packing towers), and the tower body is equipped with an inspection door, which is convenient for replacing filter materials and maintaining the tower body.

2. Various mixed exhaust gases can be treated together.

3. The adsorption rate of activated carbon​ is good, and it can be reused by heating and decompression desorption to save costs.

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