Biocompatible Ionic Liquids in Liquid – Liquid Extraction of Lactic Acid: A Comparative Study
نویسندگان
چکیده
Ionic liquids consisting of a phosphonium cationic moiety and a saccharinate anion are synthesized and compared with their precursors, phosphonium chlorides, in reference to their extraction efficiency towards L-lactic acid. On the base of measurements of the acid and the water partitioning in the equilibrium biphasic systems, the molar ratios between acid, water and ionic liquid are estimated which allows to deduce the lactic acid extractive pathway. The effect of a salting-out addition that strengthens hydrophobicity in both phases is studied in view to reveal the best biphasic system with respect to IL low toxicity and high extraction efficiency. Keywords—Biphasic system, Extraction, Ionic liquids, Lactic acid.
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