Introduction to the application fields of ion exchange resins

Water treatment

There is a huge demand for ion exchange resins in the water treatment field, accounting for about 90% of the output of ion exchange resins, which are used to remove various anions and cations in water. At present, the largest consumption of ion exchange resins is used in pure water treatment in thermal power plants, followed by atomic energy, semiconductors, and electronics industries.

Food industry

Ion exchange resins can be used in sugar, MSG, wine refining, and biological products. For example, the manufacture of high fructose syrup is to extract starch from corn, and then undergo hydrolysis to produce glucose and fructose, and then undergo ion exchange treatment to produce high fructose syrup. The consumption of ion exchange resin in the food industry is second only to water treatment.

Pharmaceutical industry

Ion exchange resins in the pharmaceutical industry play an important role in the development of a new generation of antibiotics and the quality improvement of original antibiotics. The successful development of streptomycin is a prominent example. In recent years, research has also been done on the commission of Chinese medicine.

Synthetic chemistry and petrochemical industry

In organic synthesis, acids and bases are commonly used as catalysts for esterification, hydrolysis, transesterification, and hydration reactions. Using ion exchange resin instead of inorganic acid and alkali can also carry out the above reaction, and has more advantages. For example, the resin can be used repeatedly, the product is easy to separate, the reactor will not be corroded, the environment will not be polluted, and the reaction can be easily controlled.

The preparation of methyl tert-butyl ether (MTBE) uses macroporous ion exchange resin as a catalyst, which is formed by the reaction of isobutylene and methanol, instead of the original tetraethyl lead, which can cause serious environmental pollution.

Environmental protection

Ion exchange resins have been applied to many environmental protection issues that are of great concern. At present, many aqueous or non-aqueous solutions contain toxic ions or non-ionic substances, which can be recycled and used with resin. Such as removing metal ions from electroplating waste liquid, and recovering useful substances in film production waste liquid.

Hydrometallurgy and others

Ion exchange resin, cation exchange resin, and anion exchange resin can separate, enrich, and purify uranium from depleted uranium ore, and extract rare earth elements and precious metals.

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