Raffinate is a term used in the context of chemical processing, particularly in the fields of extraction and separation. It refers to the residual liquid or solid that remains after a particular extraction or separation process has taken place.
For example, in solvent extraction, raffinate is the portion of the feed that does not contain the desired product after the extraction process. It typically contains the impurities or components that were not extracted and may require further processing or disposal.
In summary, raffinate is essentially the leftover material after a specific component has been removed from a mixture, and it plays a significant role in various industrial processes, including petrochemical refining, hydrometallurgy, and wastewater treatment.
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