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The Scientific World Journal
Volume 2013 (2013), Article ID 146092, 7 pages
http://dx.doi.org/10.1155/2013/146092
Research Article

Removal of Lead (II) Ions from Aqueous Solutions onto Activated Carbon Derived from Waste Biomass

1Department of Chemistry, Faculty of Science, Anadolu University, 26470 Eskisehir, Turkey
2Chemistry Program, Izmir Vocational School, Dokuz Eylül University, Buca, 35160 Izmir, Turkey
3Department of Chemistry, Faculty of Science, Karabük University, Karabük, Turkey

Received 22 April 2013; Accepted 22 May 2013

Academic Editors: A. Avramopoulos, D. Dondi, and C. Wu

Copyright © 2013 Murat Erdem et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The removal of lead (II) ions from aqueous solutions was carried out using an activated carbon prepared from a waste biomass. The effects of various parameters such as pH, contact time, initial concentration of lead (II) ions, and temperature on the adsorption process were investigated. Energy Dispersive X-Ray Spectroscopy (EDS) analysis after adsorption reveals the accumulation of lead (II) ions onto activated carbon. The Langmuir and Freundlich isotherm models were applied to analyze equilibrium data. The maximum monolayer adsorption capacity of activated carbon was found to be 476.2 mg g−1. The kinetic data were evaluated and the pseudo-second-order equation provided the best correlation. Thermodynamic parameters suggest that the adsorption process is endothermic and spontaneous.