Adsorption behavior of metal ions by amidoxime chelating resin

The adsorption properties of poly(acrylamidoxime) chelating resin for Cu(II ), Cd(II), Hg(II), Zn(II), Pb(II), Cr(III), and U(VI) are investigated by t he batch technique. Based on the research results of the binding capacity e ffect of the pH value on sorption kinetic experiments, it is shown that thi s resin has higher binding capacity to uranyl ions, fast kinetics, and very good selectivity from binary metal ion mixtures with Cu(II) and Pb(II). Th e uranyl ion sorption strongly depends on the pH value of the solution. The highest value of 99% is at pH 5, but at pH 1 there is no retention. The ad sorbed UO22+ can be eluted by sulfuric acid and sodium carbonate. (C) 2000 John Wiley & Sons, Inc.