Some ion exchange properties of amorphous titanium (IV) phosphate |
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Authors: | Severino F de Oliveira Claudio Airoldi |
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Institution: | (1) Departamento de Química, Universidade Federal da Paraíba, 58000 João Pessoa, Paraíba, Brasil;(2) Institute de Química, Universidade Estadual de Campinas, Caixa Postal 6154, 13081 Campinas, São Paulo, Brasil |
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Abstract: | An amorphous titanium (IV) phosphate exchanger has been synthesised and characterized through elemental analysis, infrared, and thermogravimetric techniques. Divalent cations Mn, Co, Ni, Cu, Zn, Cd, Hg and Pb in bidistilled water have been exchanged with the proton of the exchanger matrix using a batch method. From these results the thermodynamic selectivity constants and distribution coefficients were calculated, whose values indicate a high selectivity for Pb and Hg. Both cations were successfully separated from a mixture containing all cations studied through column separation experiments. |
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Keywords: | ion exchange titanium phosphate column separation divalent cations inorganic exchanger |
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