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Abstract

This work presents results of studies of thiosemicarbazone 5-NO2-salicylic aldehyde immobilization on the ionic cross-linked polymers: AV-17(Cl) (containing strongly basic groups), Amberlite IRC-50 (containing carboxylic groups) and composite AV-17(Cr) (containing chromium compounds). It is demonstrated that the rate of sorption of thiosemicarbazone on AV-17(Cl) and AV-17(Cr) is described with the pseudo-second kinetic model and is limited by the intra-particle diffusion.The sorption isotherm on these sorbents is approximated by the BET sorption model. Polymers loaded with thiosemicarbazone retain metal cations from the solution of CuSO4, Co(NO3)2, ZnSO4, NiSO4, FeSO4 and Fe(NO3)3 as a result of their coordination with the electrons donor atoms of the substrate. Thus the immobilized complexes of thiosemicarbazone on polymers were obtained. The reverse processes -the sorption of thiosemicarbazone on the Amberlite IRC-50 polymer which has been complexed with metal cations were also investigated.