Adsorbent

Adsorbent is a solid substance that can effectively adsorb some of these components from gases or liquids. It can make the active components adhere to the surface of its particles and turn liquid trace compound additives into solid compounds, which is conducive to uniform mixing. it has large specific surface area, suitable pore structure and surface structure, easy to manufacture and easy to regenerate. it has strong adsorption ability to adsorbate, and generally does not have chemical reaction with adsorbate and medium.

Adsorbent is generally used in industrial production, which can be divided into silica gel, alumina, activated carbon, polyacrylamide, zeolite molecular sieve and carbon molecular sieve according to the common use of industry. Silica gel is used for drying, separation of gas mixture and petroleum composition, etc.; alumina is also a dehydrated adsorbent; activated carbon is mainly used for water treatment, decolorization and gas treatment; polyacrylamide is mainly used for domestic sewage and organic wastewater; zeolite molecular sieves are used for gas adsorption and separation, gas and liquid drying; carbon molecular sieves mainly act as transport channels, and micropores play the role of molecular sieves. The most representative adsorbent is activated carbon, which has good adsorption performance, but the cost is high.

Adsorbent can also be divided into organic and inorganic substances, such as corncob fragments, soybean powder and grains with strong water absorption, and inorganic substances such as silica, calcium silicate and so on.