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In the chemical pharmaceutical industry, penicillin production is a common operation unit. In the extraction process, the solvent extraction method has a significant effect. The solvent extraction method is to use a suitable extractant to extract and separate penicillin from…
Acetic acid is an important chemical raw material, widely used in basic organic synthesis, medicine, dyes, spices, pesticides and other industries. In the production process of acetic acid, papermaking, pharmaceutical pesticides, vinyl acetate, acetate, polyethylene, etc., a large amount of…
Overview of Ionic Rare Earth Ore Extraction The grade of ion-adsorbed rare earth is very low, generally 0.03-0.1%, and it is impossible to enrich rare earth using conventional ore dressing methods. Currently, ammonium sulfate leaching is mainly used for recovery…
Salar brine is rich in a variety of valuable minerals, among which boron is an important resource. At present, the methods for extracting boron from salar brine include precipitation, adsorption, ion exchange and extraction. Each method has its own characteristics…
In recent years, lithium-ion batteries have been widely used due to their advantages such as high voltage, long cycle life and good safety performance. As a result, the number of waste lithium-ion batteries has increased dramatically. The positive electrode materials…
Pickling wastewater is the wastewater produced when sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid and phosphoric acid are used for pickling to remove metal surface oxides. It generally comes from industries such as spraying, electroplating, steel, machinery manufacturing, and…
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