Extraction of copper (II)‎ from aqueous solutions by using of 2-[ (4-bromo phenyl)‎ azo]-4,5-diphenyl imidazole

Abstract EN

The extraction of Copper has been studied as a complex by means of 2-[(4-Bromo phenyl) azo]-4,5-diphenyl imidazole dissolved in chloroform .The study revealed that the optimum pH value was (pHext.

= 9), concentrations of Cu (II) ion in aqueous solution giving highest distribution ratio (D) were (40μg) and the ligand [1 x 10-4M] respectively and the optimum shaking time to reach the equilibria was ten minutes.

Studies organic solvent showed there is not any linear relation between dielectric constant of organic solvents and distribution ratio (D) of extraction, but there is an effect for the structure of organic solvent.

The thermodynamic study demonstrates the complexation reaction is an exothermic at temperature degrees (20 C°-70 C°).