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liquid-liquid extraction (LLE)

A method of extracting a desired component from a liquid mixture by bringing the solution into contact with a second liquid, the solvent, in which the component is also soluble, and which is immiscible with the first liquid, or nearly so. Separation is based on different solubilities of the solute in the two phases. The liquid-liquid extraction is a relatively gentle separation process and is therefore suitable for unstable molecules


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