Competitive extraction of lanthanides by solvent extraction using Cyanex 272: Analysis, classification and mechanism

► Competitive extractions of all fourteen lanthanides (Ln) other than Pm were studied. ► Solvent extraction from HClO4 media using Cyanex 272 was investigated. ► Proposed models can be tools to predict separation of individual or quartets of Ln. ► Viability for quantitative Ln separation from e-waste leach liquor can be addressed.