Granular activated carbon is widely considered to be an effective adsorbent for treatment and water purification, but there are still difficulties in the adsorption process. The final adsorption effect is also related to many factors. Therefore, when using activated carbon, The appropriate activated carbon should be selected for treatment according to the different objects and the nature of the treatment.
In the water body, activated carbon can adsorb those volatile floating substances, which can make the harmful substances in the water body be adsorbed by 25% to 65%. When comparing the adsorption laws of various organic substances with different molecular weights, the removal rate of activated carbon is related to the molecular weight for organic substances that will shine. This situation is similar to the adsorption law of cations in phenol. Compared with small molecular organics in water, the larger the molecular weight, the easier it is to be adsorbed by activated carbon.
In extractable organic matter with a molecular weight of less than 480, granular activated carbon can achieve a good removal effect, but the removal efficiency of macromolecular organic matter is very low. The main reason is that the special microporous structure can play a very good blocking effect. Excessive organic molecules cannot pass through the activated carbon, but can only stay on the surface for adsorption. In this case, its adsorption sites on the activated carbon will change. Less, resulting in a decrease in its adsorption efficiency.
By comparing the adsorption effect of granular activated carbon on volatile and organic matter, it is concluded that there is a big difference between activated carbon on volatile organic matter and extractable organic matter. The effect can be changed with the molecular weight of volatile organic compounds. Once the molecular weight of the organic compounds that can be adsorbed is smaller, its adsorption effect will become better.www.wyactivatedcarbon.com
The main reason for this situation is that most of the volatile organics are sexual organics, but the organics that can be extracted are non-sexual or high-sexual organic adsorbents. The physical and chemical properties of activated carbon itself are a non-sexual adsorption. Because the non-sexual adsorption is non-sexual, like the positive and negative of the battery, the adsorption capacity of activated carbon for water-based substances is much smaller than that of non-sexual substances. Moreover, when the adsorbate molecule and its corresponding activated carbon have a certain proportional relationship, this is a good time for adsorption. Relative to molecules with less sex, its adsorption rate is proportional to the size of the molecular weight.
Granular activated carbon has greater competition when adsorbing various organics in water. The amount of organics adsorbed by it not only depends on the special structure of these organics, but is also closely related to the types of organics in the water. At the same time, compared with the organic matter that can be volatilized and the organic matter that can be extracted, the relationship between their adsorption effect on ningxia yongruida carbon and the molecular weight is very different. The organic matter that can be extracted can be proportional to the increase in molecular weight, and its adsorption performance will be relatively weaker; and volatile organic compounds can increase with the increase in molecular weight, so that the adsorption performance will also increase.
