Closed Loop Ethanol Extraction

It’s well-known that closed loop extractors are widely used for the extraction and concentration of substances in chemical, biochemical, industrial fields and other fields. In the whole closed loop extraction equipment, people generally use ethanol as the washing solvent to extract substances from the sample materials. In this way, closed loop extractors could achieve a high extracting efficiency and keep the extracted substances pure.

Why is Ethanol Used for Extraction?

When the closed loop extractors are used to extract and concentrate substances, the ethanol is usually chosen as the washing solvent. There are several reasons for the use of ethanol.

  1. Using the ethanol as the washing solvent, closed loop extractors can have a higher efficiency to extract and concentrate substances.
  2. With the ethanol washing the sample, a purer extracted substance can be gained.
  3. The ethanol can be evaporated efficiently. After washing and extracting the sample materials, the ethanol will be mixed with extracted substances. Therefore, the ethanol and the extracted substances should be separated. With the proprity of easy evaporation, the ethanol becomes the proper washing solvent.
  4. The ehanol can easily and efficiently concentrate nucleic acids (DNA or RNA), which guarantees the pointed substances can be extracted completely.
closed loop extractor

How is Ethanol Extracted from CBD?

The ethanol extraction is one of the mostly used methods for CBD extraction. The plant can be soaked in ethanol, and then soluble components, such as CBD, can be separated during the soaking period. It’s quite high efficient in extracting CBD.

Is Ethanol Extraction Safe?

It’s commonly recognized that not only does the ethanol possess high efficiency, but also serves as one of the safest solvents used in the extraction process. The Food and Drug Administration (FDA) classifies ethanol as a Class 3 solvent, because the residual of ethanol is less than 5,000 ppm or 0.5 percent and the risk of acute or chronic intoxication during drug production is low. In conclusion, the ethanol extraction is safe.

What is the Closed Loop Extraction?

The closed loop extraction is known as a well received cannabis extraction method, occurring entirely in a closed vessel. The closed loop extractor is a common equipment for transferring a solute substance from one solvent to another by utilizing the difference in solubility or partition coefficient of the substance in two mutually incompatible (or slightly soluble) solvents. It is widely used in chemical, metallurgical, food and other industries, commonly used in petroleum refining industry. During the entire operation of the closed loop extractor, all the parts of the plant are coordinated for solvent extraction. Solvents can be used and recycled in closed loop extractors, which is very economical for the user and very environmentally friendly for people.

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