Extraction of copper ions from aqueous solutions with oleic acid as green solvent

Abstract

This research aimed to extract copper ions from aqueous solutions with oleic acid as a green solvent. The effects of pH equilibrium, temperature, and sodium sulphate (Na2SO4) concentration were investigated and the optimum conditions for maximum extraction of copper ions were determined. The findings revealed that the extraction of copper ions increased with equilibrium pH and temperature before it reached a plateau, while it increased and achieved a peak before it decreased with sodium salt concentration. The highest extraction of copper ions was achieved at 94% under the following optimum conditions: equilibrium pH of 4, temperature 55°C and 400 mM of Na2SO4. Therefore, it can be concluded that oleic acid is a potential green solvent for extracting copper ions from aqueous solutions.

Recovery of Copper from Low Grade Ores by HNO3 Leaching: Process Optimization and Solvent Extraction Studies using Soybean Fatty Acid

“…Although kerosene and xylene are both non-polar solvents, kerosene is a mixture of aliphatic hydrocarbons while xylene is aromatic. The results agree with the findings of Halim et al [36] in their study of the extraction of copper from aqueous media using oleic acid as the extractant.…”

Liquid-Liquid Extraction of Copper (II) in a Synthetic Sample using a New Macrocyclic Compound

“…(Yunus et al, 2020). Various methods such as ion exchange (Dabrowski et al, 2004), adsorption (Ali et al, 2016), membrane filtration (Camarillo et al, 2010), chemical precipitation (Matlock et al, 2002), and liquid-liquid extraction (LLE) have been used to extract Cu (II) ion and other heavy metal ions from aqueous phase (Halim et al, 2019). Among different techniques to extract Copper ions from the aqueous phase, (LLE) extraction is one of the effective methods to remove copper ions from the aqueous phase (Ghanadzadeh and Abbasnejad, 2011).…”