European Journal of Experimental Biology Open Access
ISSN: 2248-9215
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Abstract
Kinetic and equilibrium studies on the adsorption of Cu(II) ions by a new activated carbon
A. Jafar Ahamed, V. Balakrishnan and S. Arivoli
The efficiency of activated carbon prepared from Albizia lebbeck bark [ALC] for the adsorption
of Cu2+ ions from aqueous solutions has been studied as a function of agitation time, adsorbent
dosage, initial metal ion concentration, temperature and pH of adsorbate solution. The optimal
conditions for the adsorption have been arrived at and experiments were conducted to determine
the Langmuir constants, Freundlich parameters and thermodynamic parameters such as G°,
H° and S°. Desorption studies were also carried out for the recovery of both adsorbent and
the metal ions. The adsorption of Cu2+ ions on to the surface of ALC has been confirmed by the
analysis of IR spectra, XRD and SEM images before and after Cu2+ adsorption.
