1. Principles of the liquid-liquid extraction method
Liquid-liquid extraction is an integral part of chemical and process engineering. It owes its origins to analytical chemistry, whose methods for identifying species in solution are based on separation techniques. More precisely, liquid-liquid extraction is a process which enables the separation of two or more constituents of a mixture by taking advantage of their unequal distribution between two practically immiscible liquids.
Typically, a feed solution containing the constituents to be separated (solutes) is brought into intimate contact with a second liquid phase called solvent, often composed of an extractant and a diluent, or even a phase modifier, which preferentially extracts one or more of the solutes. The solvent containing the solute(s) is referred to as the extract, while the feed solution that has lost most of...
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Principles of the liquid-liquid extraction method
Definitions and nomenclature
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