Activated carbon is a strong adsorbent, the adsorption of gas and adsorption capacity are very large.
When the gas molecules occupy the adsorption surface of activated carbon, the adsorption of activated carbon will be reduced, resulting in the so-called "poisoning" of activated carbon.
If there is oxygen on the activated carbon adsorption, sometimes also make the adsorption of the material oxidation reaction.
Therefore, before the use of activated carbon, most of the gas must be removed by adsorption.
Usually remove the gas in activated carbon there are two methods, one method is to use ephedrine or hydrogen sulfide saturated water solution treatment, but this treatment method is too complex, and through these treatments can also cause some other side reactions, so it is not commonly used.www.activated-carbon-pellets.com
Another method is to heat drying, can be adsorbed most of the gas I body removal.
It is usually heated and dried at 150C for 4 to 5 hours before use.coconut activated carbon factory
Because of the high temperature of nylon deformation, nylon activated carbon before use at 100 ° C heating and drying 4 to 5 hours.
Activated carbon has no adverse adsorption effect on some substances, causing some substances to adsorb on it can not elute.
Therefore, in the separation of activated carbon adsorption of the material, must first activated carbon deactivation.Its adsorption performance mainly depends on several main material parameters and process parameters on it [8. Material parameters including carbon adsorption porosity, thickness of honeycomb structure and the content of carbon; process parameters including fluid flow rate and concentration of the adsorption properties of adsorption, can adsorption depends on the carbon structure and adsorption properties of features such as molecular weight). The curve is one of the main performance characterization of adsorption, adsorption is the adsorbate concentration ratio before and after the change over time of a function [9 '. This ratio is 0.95, the amount of adsorption properties of adsorption is called penetration capacity. Penetration capacity depending on the fluid flow rate, the concentration of the adsorbate and honeycomb carbon component content