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|Title:||Sorption and ion exchange behavior of Pb(II), Bi(III) and Th(IV) in aqueous solutions towards zirconium phosphate|
|Keywords:||Adsorption isotherms;Inorganic ion exchanger;Ion exchange characteristics;Zirconium phosphate;Kinetics and thermodynamics of ion exchange;Tetravalent metal acid salt|
|Abstract:||Amorphous zirconium phosphate (ZP), an inorganic ion exchanger of the class of tetravalent metal acid (TMA) salt, has been synthesized by sol-gel method, and characterized by elemental analysis (ICP-AES), thermal analysis (TGA, DSC), FT-IR and X-ray diffraction studies. Sorption/ion exchange behavior of metal ions [Pb(II), Bi(III) and Th(IV)] towards ZP has been studied varying temperature, kinetic (over all rate constant k2 and equilibrium constant kc,) and thermodynamic parameters (standard free energy ΔG°, enthalpy ΔH°, and entropy ΔS°) evaluated and adsorption isotherms (Langmuir and Fruendlich) studied. Sorption of metal ions follows the order Pb(II) > Bi(III) > Th(IV).|
|Appears in Collections:||JSIR Vol.66(11) [November 2007]|
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