Extraction of Copper, Lead and Nickel from Hydrochloric Acid Solutions by N-Methyl-N,N,N-Trioctyloctan-1-Ammonium Chloride in Methyl Isobutyl Ketone

Abstract

Amines as organic molecules are able to form complexes with metals ions and this is the reason why we can use them to extract metals ions from hydrometallurgical solutions. Based on that, we have investigated the extraction of copper, lead and nickel with N-methyl-N,N,N-trioctyloctan-1-ammonium chloride from the mixture of elements prepared in artificial manner. We investigated the influence of HCl concentration and salts (NaCl, NaI and CH₃COONa) concentration in extraction of three elements (copper, lead and nickel) from water solutions. All extractions were done from HCl water solutions with c = 2, 4 and 6 mol dm^-3 and in presence of NaCl, NaI and CH₃COONa salts, which we prepared in different concentrations. Extraction of copper from NaCl solution move from 12.5-76.8%, from NaI solution 100% and from CH₃COONa solution 5.1-88.2%. Extraction of lead from NaCl solution move from 0-48.5%, from NaI solution 100% and from CH₃COONa solution 32.6-82.1%. In solutions of NaCl, NaI and CH₃COONa we cannot extraction the nickel.