SÍNTESIS Y CARACTERIZACIÓN DE LÍQUIDOS IÓNICOS PARA LA REMOCIÓN DE IONES METÁLICOS DE SOLUCIONES ACUOSAS.

Abstract

Novel ionic liquids were synthesized with 6 and 8 carbon aliphatic chains, with application for the removal of heavy metal cations, where ionic liquids have the general formula C+ A-, where C+ represents an organic cation, specifically two typestrioctylmethylammonium and trihexylmethylammonium; while the anion A-is represented by carboxylic acid derivatives such as acetate, oxalate, and benzoate, among others. The molecular structures of ionic liquids were characterized by 1H NMR, 13C NMR and IR and UV-Vis spectroscopy. The extraction capacity of heavy metal cations through the process of liquid-liquid extraction was studied. The results showed that 4 ionic liquids removal reached more than 90% of heavy metal from aqueous solutions of 25 ppm of copper, cobalt, nickel, lead and zinc.