Poly(N-vinylpyrrolidone) (PVP) was investigated as a novel extracting agent. The metal ion extraction properties for Cu(II),
Co(II), Ni(II), Cd(II), Zn(II), Pb(II), Hg(II), Cr(III) and Fe(III) were investigated using the liquid-liquid solvent extraction
technique (bath method). The metal ion interactions with the polymer were determined as a function of the pH as well as the
kinetic characteristic and stripping.
For copper ions pH 4 was the optimum extracting pH value, and the 2M hydrochloride acid was better than nitric acid as a stripping
agent.
Received: 7 September 2000/Revised version: 14 September 2000/Accepted: 14 September 2000