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IJCT Vol.11(1) [January 2004] >

Title: Metal complexation on functionalised polymer supports–An adsorption/complexation phenomenon
Authors: Chettiar, K Sivadasan
Sreekumar, K
Issue Date: Jan-2004
Publisher: CSIR
IPC CodeC01G51/00; C01G3/00; C08G85/00
Abstract: The present study is aimed at preparing polymer metal complexes of Co(II) and Cu(II) under controlled conditions of concentration, time, temperature and pH The complexes are derived from DVB crosslinked polystyrene and poly(hydroxyethyl methacrylate) supported thiosemicarbazone-transition metal interaction. Crosslinked polymer ligand beads with definite porosity can adsorb metal ions. The question whether metal complexation is a case of adsorption and coordination, is investigated. Kinetics and thermodynamics of adsorption of metal ions on the polymeric ligand with proper surface structures is determined. The equilibrium metal intake by 10 and 15% crosslinked resins at constant temperature was utilised to construct Langmuir and Freundlich adsorption isotherms. The influence of temperature on the extent of adsorption was studied by plotting isotherms at different temperatures and calculating different thermodynamic parameters.
Page(s): 59-66
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.11(1) [January 2004]

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