APPLICATION OF DEBYE-HUCKEL THEORY AND BRONSTED-BIERRUM EQUATION ON SEPARATION OF COPPER AND ZINC BY SUPPORTED LIQUID MEMBRANE USING TOPS-99

and 2.00 x 10 -5 mol/m 2 .s., respectively. In the presence of CH3COONa salt solution, the zinc flux remained constant up to 10 mol/m 3 and with further increase of concentration, the zinc flux decreased exponentially as above. The maximum separation factors obtained in presence of NaCl, NaNO3, Na2SO4, CH3COONa and NaClO3 were 1127.18, 1244.38, 1296.75, 623.44 and 831.17, respectively. These effects can be explained with the combination of Debye- Huckel theory and Bronsted-Bierrum equation. At higher concentration of salts the separation factor was also very significant. THEORY In supported liquid membrane process flux of metal ion can be expressed as: JM = (V /A) d(M) / dt (1) where V= Volume of feed solution, m 3 A= Area of the membrane, m 2