Because the adsorption process and principle of action involved in activated carbon water treatment are more complicated, there are many influencing factors. It is mainly related to the nature of activated carbon, the nature of pollutants in the water, the process principle of activated carbon disposal, and the selected operating parameters and operating conditions.https://www.wyactivatedcarbon.com/
1. The properties of activated carbon. Activated carbon used for water treatment should have three requirements: large adsorption capacity, fast adsorption speed and good mechanical strength. In addition to other external conditions, the adsorption capacity of activated carbon is mainly related to the appearance of activated carbon; the adsorption speed is mainly related to the particle size and pore dispersion of activated carbon, which is conducive to the diffusion of adsorbents (pollutants in water) into the micropores. The smaller the particle size of the activated carbon, the faster the adsorption speed, but the head loss will increase, generally in the range of 8-30 mesh. The mechanical abrasion resistance of activated carbon affects the service life of activated carbon.
2. The nature of pollutants is very different in the adsorption capacity of different pollutants of the same kind of activated carbon. Due to differences in the solubility, molecular structure, polarity and concentration of pollutants in water, the adsorption of activated carbon can vary greatly.
3. Temperature Because the adsorption process is an exothermic reaction, the heat of adsorption is small during liquid phase adsorption, and when activated carbon is used to dispose of water, the effect of temperature on adsorption is not significant.
4. The effect of coexistence of multi-component pollutants When applied to the adsorption method to treat water, the water is usually not a single pollutant, but a mixture of multi-component pollutants. During adsorption, they can be co-adsorbed to promote or interfere with each other. Under normal conditions, the respective adsorption capacity of multi-component adsorption is lower than that of single-component adsorption.
5. Adsorption operating conditions: When activated carbon is adsorbed in liquid phase, the speed of external diffusion (liquid film diffusion) has an effect on the adsorption, so the type of adsorption installation, contact time (water flow rate), etc. have an impact on the adsorption effect.https://www.wyactivatedcarbon.com/products/other-activated-carbon/honeycomb-activated-carbon.html
1. The properties of activated carbon. Activated carbon used for water treatment should have three requirements: large adsorption capacity, fast adsorption speed and good mechanical strength. In addition to other external conditions, the adsorption capacity of activated carbon is mainly related to the appearance of activated carbon; the adsorption speed is mainly related to the particle size and pore dispersion of activated carbon, which is conducive to the diffusion of adsorbents (pollutants in water) into the micropores. The smaller the particle size of the activated carbon, the faster the adsorption speed, but the head loss will increase, generally in the range of 8-30 mesh. The mechanical abrasion resistance of activated carbon affects the service life of activated carbon.
2. The nature of pollutants is very different in the adsorption capacity of different pollutants of the same kind of activated carbon. Due to differences in the solubility, molecular structure, polarity and concentration of pollutants in water, the adsorption of activated carbon can vary greatly.
3. Temperature Because the adsorption process is an exothermic reaction, the heat of adsorption is small during liquid phase adsorption, and when activated carbon is used to dispose of water, the effect of temperature on adsorption is not significant.
4. The effect of coexistence of multi-component pollutants When applied to the adsorption method to treat water, the water is usually not a single pollutant, but a mixture of multi-component pollutants. During adsorption, they can be co-adsorbed to promote or interfere with each other. Under normal conditions, the respective adsorption capacity of multi-component adsorption is lower than that of single-component adsorption.
5. Adsorption operating conditions: When activated carbon is adsorbed in liquid phase, the speed of external diffusion (liquid film diffusion) has an effect on the adsorption, so the type of adsorption installation, contact time (water flow rate), etc. have an impact on the adsorption effect.https://www.wyactivatedcarbon.com/products/other-activated-carbon/honeycomb-activated-carbon.html
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