Abstract
Glycidylmethacrylate-divinylbenzene copolymers containing ethylenediamine groups (GD-EDA) and triethylenetetramine groups (GD-TET) were prepared to develop new selective adsorbents for precious metals over base metals. It was found that GD-EDA and GD-TET are highly selective adsorbents for palladium (II), gold (III) and platinum (IV) over base metals such as copper (II), cobalt (II), cadmium (II) and iron (III) . The adsorption equilibrium of palladium (II) was quantitatively studied from acidic chloride media at 303 K using GD-EDA. The effects of the hydrogen ion and chloride ion concentrations on the adsorption of palladium (II) were examined to elucidate the chemical species of adsorbed palladium (II) on GD-EDA.
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