Abstract
Copolymers (2‐HAOF), synthesized by the condensation of and H2N(O)CC(O)NH2 with CH2O in the presence of acid catalyst, proved to be selective chelating ion‐exchange copolymers for certain metals. The chelating ion‐exchange properties of this copolymer were studied for Cu(II), Ni(II), Co(II), Zn(II), Fe(III), Cd(II) and Pb(II) ions. A batch equilibrium method was employed in the study of the selectivity of metal ion uptake involving the measurements of the distribution of a given metal ion between the copolymer sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The copolymer showed a higher selectivity for Fe(III), Cu(II) and Ni(II) ions than for Co(II), Zn(II), Cd(II) and Pb(II) ions.
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