Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Adsorption of Cd(II) From Solution By Nsu Clay: Kinetic and Thermodynamic Studies
by G.K. Akpomie, M.A. Abuh, C.I. Ogbu, A.C. Agulanna and I.O. Ekpe

Abstract:
The work reports the utilization of Nsu Clay as a cheaper alternative for the removal of Cd(II) ions from industrial effluent, the significance of this study is to reduce the harmful effect of Cadmium to man, aquatic life and microorganisms, since most developing Nations faced with the problem of high cost involved in treating industrial waste can make use of the adsorptive properties of the clay as a cheaper alternative. The effect of contact time, sorbent dose and temperature on the adsorption process were investigated using batch method. The results showed an increase in adsorption with increase in these parameters. Maximum uptake was obtained at a contact time of 20 minutes. The kinetic study showed that the adsorption of Cd(II) on Nsu clay can be described by both the Pseudo-first order and Pseudo-second order models. The Entropy change ?S0 and Enthalpy change, ?H0 obtained from thermodynamic study are 59.29J/molK and 16.93kJ/mol respectively. These results indicate that the adsorption of Cd(II) by Nsu clay is spontaneous and endothermic in nature and the clay can be used as a cheap adsorbent for the removal of Cd(II) from aqueous effluents.

Keywords: adsorption, Cd(II), cadmium, isotherm, kinetic, thermodynamic

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