What Is The Principle Of Macroporous Adsorption Resin Separation Of Mixtures

Macroporous adsorption resin is a popular product used in the water treatment industry at present, and the specific surface area of this type of resin is larger, so it has high adsorption performance. The principle of its separation is the problem that people pay attention to, through this paper to understand the specific principle of macroporous adsorption resin separation mixture.

Principle of mixture separation by macroporous adsorption resin
1. Molecular screening: Generally, there are different pore sizes in the interior of the macroporous adsorption resin, so different components in the mixture can be screened. According to its similar dissolution principle, the composition of the molecule with similar size and polarity will also be easier to enter the pore of the resin to achieve the purpose of separation.
2. Adsorption selectivity: The chemical groups on the surface of the macroporous adsorbed resin have specific affinity for some components in the mixture, which can achieve selective adsorption effect and greatly improve the separation effect.
3. Concentration difference drive: Because the adsorption rate of each component on the resin is not the same, and the existence of the concentration difference is easier to adsorb the component with a faster adsorption rate to achieve the final separation effect.
4. Kinetic and thermodynamic effects: under certain conditions of use, if the adsorption rate is faster, the group is more easily adsorbed by the resin, while the adsorption rate is slower. Therefore, the separation between different components can be achieved by adjusting its operating conditions.

Adsorption principle of macroporous adsorption resin
In fact, the role and principle of adsorption of macroporous adsorption resin in the process of use are divided into physical adsorption and chemical adsorption.
1. Physical adsorption: It refers to the adsorption caused by the van der Waals force generated between the adsorbent and the adsorbent, physical adsorption is a reversible process, although the adsorption force is weak, but its adsorption speed is relatively fast. This process mainly occurs in the large pore structure of the adsorbent, which has an important improvement in the adsorption efficiency.
2. Chemical adsorption: It refers to the chemical bond formed by the chemical reaction between the surface of the adsorbent and the adsorbent, and adsorption is achieved by chemical bond. The chemical adsorption force is relatively strong, and the adsorption process is irreversible, mainly occurring in the micropore and mesoporous structure of the adsorbent, which can effectively improve its adsorption selectivity.

Therefore, as a kind of adsorption and separation material, the separation mixture principle used by macroporous adsorption resin is more complex and multi-faceted. Understanding its separation principle can make us better understand and use it to exert its maximum separation performance and effect.