Extraction Behaviour of Cu2+ Ions with Used Cooking Oil-Based Organic Solvent

Abstract

Abstract. The aim of this work was to study the extraction behaviour of Cu 2+ ions from aqueous solution with used cooking oil-based organic solvent. The used cooking oil-based organic solvent was composed of di-2-ethylhexylphosphoric acid (extractant), tributylphosphate (phase modifier) and used cooking oil (diluent). Effects of equilibrium pH (2-6), extractant concentration (10-100 mM) and operating temperature (25-47 o C) on Cu 2+ ion extraction from aqueous solution were investigated. It was found that used cooking oil-based organic solvent is a potential green and low-cost organic solvent for Cu 2+ ion extraction from aqueous solution.