Abstract
In this chapter, ionic liquids as solvents for efficient separation of the metal ions and organic compounds from aqueous solutions have been described. Ionic liquid–based liquid–liquid extraction and the supported liquid membrane, as well as aqueous two-phase systems, have been studied. These techniques show enormous potential for a wide range of applications. Ionic liquids (ILs) can replace typical solvents, are used as new extractants, form a pure extracting phase, or can be additives to traditional systems. Finally, the problem of regeneration and reuse of ILs has been discussed. The greatest benefit resulting from the combination of ionic liquids and separation methods lies in the elimination of volatile organic compounds and the possibility of designing a suitable ionic liquid for a specific separated compound.
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