“…The use of this type of extractants has been studied for a range of extractive separations in the last years, e.g. for the separation of aromatic and aliphatic compounds [13][14][15], and for the extraction of polar compounds from aqueous streams, including biomolecules and vitamins [16,17] alcohols, glycols and organic acids [18][19][20][21][22][23][24] and metals [25]. In our preliminary solvent screening work for mono ethylene glycol (MEG) extraction from aqueous streams, we synthesized a new ionic liquid, tetraoctyl ammonium 2-methyl-1-naphtoate [TOA MNaph], which turned out to be a promising solvent for the recovery of very polar compounds from aqueous media [18].…”