METAL-ION SORPTION ABILITY OF POLY(4-VINYLPYRIDINE-CO-N,N-DIMETHYLACRYLAMIDE)

Resins containing amide and 4-vinylpyridine moieties were synthesized by radical polymerization. All the resins were completely insoluble in water and characterized by FT-IR spectroscopy, elemental analysis and thermal analyses. The ability to bind Cu(II), Fe(II), Fe(III) and U(V I) ions at different pHs was studied by batch equilibrium procedure. U ranium(VI) was adsorbed at pH 1 above 50% by the resins 1 and 2. The s electivity of uranium(VI) respect to copper(II) at pH 1.0 was 2.11. Th e uranium-loaded resin 2 could be partially recovered by treatment wit h H2SO4 and Na2CO3.