As a means of solution purification, the extraction method is the use of compounds in the two immiscible solvents in the solubility or distribution coefficient of the difference, so that the compound from a solvent transfer to another solvent.
Compared with other separation methods, extraction method has the advantages of high separation efficiency, low reagent consumption, high recovery rate and simple equipment, and has been widely used in the fields of Hydrometallurgy, petrochemical and environmental protection. With the development of science and technology in our country, the laboratory instrument industry has been developed rapidly, and the technical support has provided the guarantee for the product upgrading, and the laboratory instrument has got a bigger market and development space.
As one of the most widely used extraction devices, ultrasonic extractor is rapidly rising to serve scientific experiments. Ultrasonic extraction is the use of ultrasonic radiation pressure generated by the strong cavitation, disturbance effect, high acceleration, crushing and stirring, such as multistage effects, increase the movement of the material molecules frequency and speed, increase the solvent penetration, so as to accelerate the target components into the solvent, promote the extraction of the process.
Compared with conventional extraction technology, ultrasonic assisted extraction has the advantages of fast, inexpensive and high efficiency, and is widely used in traditional Chinese medicine, food, chemical industry and other fields. With the continuous development of ultrasonic extraction technology, the continuous improvement of equipment automation, combined with the characteristics of extraction objects, ultrasonic extraction technology will greatly improve the extraction efficiency and obtain higher quality extracts.
But at the same time, the ultrasonic extractor will be affected by the frequency, intensity, extraction time, enzyme of the extractive product and the dosage and concentration of the solvent, which affects the final result of the extract. At present, the field of ultrasonic extractor in our country is speeding up, studying the new extraction system and technology, developing the theory of extraction, focusing on the automation of the research and development of new extraction equipment, and moving towards specialization and normalization.
In order to reduce the effect of ultrasonic on the extract, so as to improve the effective extraction rate and better serve the scientific research project. On the other hand, regardless of the sample is organic or inorganic, ultrasonic extraction technology has shown obvious advantages, but most of the laboratory sample dosage is small, from the industrial application of a certain distance.
Therefore, the real application of ultrasonic extraction technology is one of the problems that should be paid attention to in the future technology development. In view of the development of ultrasonic extractor, the technology of ultrasonic extraction in China is in the development and the prospect is considerable.
