Zeitschrift für Thermodynamik und Katalyse
Offener Zugang

Abstrakt

Separation of Copper (II) with Solvent Extraction Using Lauric acid Diluted in Benzene

H. Ghanadzadeh and S. Abbasnejad

Solvent extraction of Copper (II) {Cu(II)} from aqueous solutions by organic solvent composing of lauric acid (extractant)/benzene (diluent) has been studied at T=298.2 K under atmospheric pressure. Effect of initial Cu(II) concentration in aqueous phase ( 5 X 10-4, 2.5 X 10-3, 5 X 10-3 and 2.5 X 10-2) M in pH=1.6 Sulphuric acid solution were investigated. Extraction was studied as a function of organic phase composition, acid concentration, aqueous pH, primary copper concentration. The copper concentrations were analysed by Spectroscopy. Percentage extraction (%E) of Cu(II) was studied. Distribution coefficient (D’) were measured to determine the extracting capability of the extractant. The distribution coefficient (D’) and extraction percentage (%E) increased with growth of pH. The results indicate pH, percentage extraction (%E), and distribution constant (D’) decrease with increasing initial Cu(II) concentration (5 X 10-4 to 2.5 X 10-2) M and they decrease with increase of lauric acid concentration (0.2 to 0.5) M.