Many people may not know what the role of activated carbon is. For example, if you want to remove formaldehyde after renovating a new house, you can use activated carbon for adsorption to exclude these harmful objects. Today, Xiao Bian gave you the introduction to the factors on activated carbon adsorption performance of activated carbon adsorption and the impact of what relevant content!
Activated carbon adsorption performance 1. When the pore size of activated carbon is the same, their adsorption capacity will increase, the adsorption isotherm will expand upward; when their surface area is the same and the pore size is getting smaller, in the field of low concentration, their The adsorption force will increase.
Activated carbon adsorption performance 2. When the surface of activated carbon increases in polarity, the binding force between water and carbon will start to increase. When the effective adsorption capacity decreases, the adsorption isotherms will expand to high concentrations.
Activated carbon adsorption performance 3. When the molecular weight of the adsorbate increases, the adsorption isotherm will be compressed to the low concentration side, and then further expanded to the high concentration side.
What are the factors that affect the adsorption of activated carbon:
1. Properties of activated carbon
Because the physical and chemical properties of activated carbon determine its adsorption effect, its properties are related to the material processing method used in the manufacture of activated carbon. The three most basic requirements of activated carbon are: the capacity of adsorption is large, and the speed of adsorption is Fast and mechanical strength is better.
2. The nature of the adsorbate
Because the dissolved mass of activated carbon adsorption has a certain correlation with the solubility in the solvent, the order of adsorption of activated carbon in water is increased in the order of methyl ethyl propylene but the smaller the solubility, the easier the activated carbon adsorption.
3. The effect of solution pH
Activated carbon adsorbs minerals and oh in water, but this will affect its adsorption to other ions. Generally, the lower the pH value, the better its adsorption effect, so in actual application, you must first test the most A good pH range.
4. Effect of solution temperature
The heat absorbed and released by the adsorbent is the heat of adsorption. If the index of the heat of adsorption is larger, the temperature will have a greater influence on the adsorption. Generally, when the activated carbon is used to treat water, the temperature does not have a great influence on the adsorption.
5. The influence of multi-component adsorbate coexistence
When using adsorption to treat sewage, because there is more than one pollutant in the water, because of the different nature, so when they are adsorbed, they may promote each other or may interfere with each other. But in most cases, the capacity of multiple sets of adsorption will be lower than that of a single set of adsorption.
Xiaobian Summary: These are the factors that affect performance and the share of small series of activated carbon adsorption on activated carbon adsorption have the entire contents of which. Activated carbon also has a physical function of deodorizing and detoxifying, and will not cause secondary pollution to the environment.
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