Resin adsorption technology
Key words: Multi-effect evaporation | distillation | resin adsorption
Classification:
Product Description
Introduction to Resin Adsorption Technology
Resin adsorption refers to the process in which one or more components in a fluid diffuse to the outer surface and the inner surface of the micropores of a porous solid material when the fluid comes into contact with it, and are adsorbed onto the resin through intermolecular van der Waals forces or various other forces. If the adsorbent has selectivity for a certain component in the fluid, that component will be enriched on the resin, thus achieving separation from other components in the fluid. Polymer adsorbents (adsorption resins) have adjustable pore structures and surface chemical structures, allowing for the enrichment, separation, and recovery of organic matter in wastewater through sieving and varying strengths of intermolecular forces. Although this method requires relatively high investment, it effectively removes pollutants and can recover some organic matter.
Principles of Resin Adsorption Technology
Resin adsorption technology is mainly based on two mechanisms: physical adsorption and chemical adsorption.
Physical adsorption: Adsorbate molecules are adsorbed onto the resin surface and pore walls through intermolecular forces (such as van der Waals forces). The adsorption process is reversible, the adsorption heat is low, the adsorption rate is fast, and it is not affected by chemical properties. Physical adsorption dominates in large-pore resin adsorption.
Chemical adsorption: Adsorbate molecules undergo chemical reactions with the resin surface, forming chemical bonds. Although chemical adsorption accounts for a small proportion, it can occur under specific conditions and is suitable for the separation and purification of specific substances.
Application Areas of Resin Adsorption Technology
Wastewater treatment: Used to remove organic matter, heavy metals, and other pollutants from wastewater, characterized by high efficiency and environmental friendliness.
Air purification: Used to treat volatile organic compounds (VOCs) in industrial exhaust, with advantages of high efficiency, cost-effectiveness, and reusability.
Organic matter separation: Used in the pharmaceutical, food, and chemical industries for the separation and purification of organic matter, catalysts, etc.
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