Sorbents Adsorbent properties and classification, adsorbent also known as absorbent. This substance allows the active ingredient to adhere to its particle surface, so that the liquid trace compound additive into a solid compound, is conducive to the implementation of uniform mixing. Is a solid substance capable of efficiently adsorbing some of the components from a gas or liquid. With a large surface area, the appropriate pore structure and surface structure; the adsorption of a strong adsorption capacity; generally not with the adsorbate and the media chemical reaction; easy to manufacture, easy to regenerate; excellent adsorption and mechanical properties The

　　Sorbents Adsorbents generally have the following characteristics: large specific surface, the appropriate pore structure and surface structure; the adsorption of a strong adsorption capacity; generally not with the adsorption of chemicals and chemical reaction; easy to manufacture, easy to regenerate; Adsorption and mechanical properties

　　Adsorbents can be sorted by pore size, particle shape, chemical composition, surface polarity, etc., such as coarse and pore adsorbents, powders, granules, strip adsorbents, carbon and oxide adsorbents, Polar adsorbents and so on.

　　Commonly used adsorbents are carbonaceous raw materials for various activated carbon adsorbents and metal, non-metallic oxide adsorbents (such as silica gel, alumina, molecular sieve, natural clay, etc.). The most representative adsorbent is activated carbon, adsorption performance is quite good, but the cost is relatively high, has been used in the Songhua River event used to adsorb toluene in water. Followed by molecular sieves, silica gel, activated aluminum, polymer adsorbents and bioabsorbents.

　　Sorbents Adsorbents are generally used in industrial production, so according to the common nature of the industry can be divided into six categories of adsorbents.

　　Silica gel, which is mainly used for drying, gas mixture and separation of petroleum components;

　　Alumina, it is also a dehydrated adsorbent;

　　Activated carbon, mainly used for water treatment, decolorization and gas treatment;

　　Polyacrylamide, mainly used for domestic sewage and organic wastewater;

　　Zeolite molecular sieves for gas adsorption separation, gas and liquid drying;

　　Carbon molecular sieve, mainly from the role of transport channels, micropores are the role of molecular sieve.

　　Sorbents Adsorbents are also generally divided into organic and inorganic two categories, organic matter such as wheat embryo powder, defatted corn embryo powder, corncobs debris, coarse bran, soy flour and strong absorbent fish and so on. Inorganic materials include silica, vermiculite, calcium silicate and so on.