How is high quality activated carbon produced

Answers:0   |   LastUpdateAt:2021-07-10 01:02:51  

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Asked at 2021-07-10 01:02:51

Principle of activated carbon adsorption

activated carbon is a kind of very small granular has a large surface area, and more tiny holes in the granular - capillary. The capillary has very strong adsorption capacity, due to the granular surface area is large, so a good contact with with gas (impurities). When these gases (impurities) encounter capillary by adsorption, purification effect. Activated carbon surface area of the study is very important, only the BET specific surface area detecting data of active carbon method detected result is reliable, domestic at present there are many instruments can only make direct comparison method of detectionIn domestic has been eliminated. Specific surface area test unified the multi-point BET method at home and abroad, specific surface area measurement standards are developed at home and abroad is based on BET test method, please see our national standard (GB/T 19587-2004) - gas adsorption BET principle of solid material specific surface area measurement methods. Specific surface area testing is actually the more time-consuming jobs, as the adsorption capacity of sample is different, some sample testing may need to spend the whole dayTime, if the test process is not fully automated, the tester can not leave at any time, and should be highly focused, observe the dashboard, control the knob, a little careless will lead to the failure of the test process, which will waste a lot of valuable time of the tester.activated carbon pellet manufacturer 

F - Sorb 2400 specific surface tester is really able to BET method detection instruments (both direct comparison method), the more important F - Sorb 2400 specific surface tester is by far the only specific surface area of the fully automated intelligent testing equipment, the test results with the international high consistency, the stability is very good also, at the same time reduce the human error, improve accuracy test results.chinactivecarbon.com 

The adsorption capacity of activated carbon on each gas (unit: mL /cm3):H2, O2, N2, CI2, CO2

4.5, 35, 11, 494, 97 The main factors affecting the adsorption of activated carbon ① the nature of activated carbon adsorbent

The larger the surface area, the stronger the adsorption capacity;

Activated carbon is a non-polar molecule, easy to adsorb non-polar or very low polarity adsorbent;

The size of the activated carbon adsorbent particle, the structure and distribution of the fine pore and the surface chemical properties also have a great influence on the adsorption.

(2) the nature of the adsorbent

Depends on its bath solubility, surface white energy, polarity, adsorbate molecule size and unsaturation, the concentration of adsorbate, etc

③ Wastewater pH value

Activated carbon generally has a higher adsorption rate in acidic solution than in alkaline solution.

The pH value will affect the state and bath solubility of the adsorbent in the water towel, thus affecting the adsorption effect.

④ Coexisting substances

When a variety of adsorbates coexist, the adsorption capacity of activated carbon to a certain adsorbate is worse than that containing only the adsorbate 

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