Due to 8-hydroxyquinoline Copper(WSDTY) formation of a monolayer of adsorbate on the surface of the adsorbent the value of qereaches a saturation value which represents the maximum amount of ligand that can be adsorbed for the given amount of adsorbent under given set of experimental conditions. To verify adherence to various adsorption models like Dubinin-Radushkevich, Langmuir and Freundlich isotherms, some representative plots of ln qevs e2, 1/qevs 1/ Ce and ln qevs ln Ce are shown in figures 3,4 , and 5 for QSA and figures 6, 7 and 8 for NQSA respectively. where qe= concentration of copper ion on ligand loaded GAC in mg/mmole of ligand C0and Ce= initial and equilibrium concentration of copper ion in solution in mg/l, V= volume of solution in litres, d= millimoles of ligand on GAC.

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