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Title: Sorption and ion exchange behavior of Pb(II), Bi(III) and Th(IV) in aqueous solutions towards zirconium phosphate
Authors: Jayswal, Amit
Chudasama, Uma
Keywords: Adsorption isotherms
Inorganic ion exchanger
Ion exchange characteristics
Zirconium phosphate
Kinetics and thermodynamics of ion exchange
Tetravalent metal acid salt
Issue Date: Nov-2007
Publisher: CSIR
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).
Page(s): 945-951
ISSN: 0022-4456
Source:JSIR Vol.66(11) [November 2007]

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