Title: Biosorption of lead onto mimosa tannin resin: equilibrium and kinetic studies

Authors: Harun Turkmenler, Mahmut Ozacar, I. Ayhan Sengil

Addresses: Institute of Sciences and Technology, Sakarya University, 54040 Sakarya, Turkey. ' Science and Arts Faculty, Department of Chemistry, Sakarya University, 54100 Sakarya, Turkey. ' Engineering Faculty, Department of Environmental Engineering, Sakarya University, 54040 Sakarya, Turkey

Abstract: The biosorption of lead onto mimosa tannin resin is studied using a batch sorber. The experimental isotherm data were analysed using the Langmuir, Freundlich and Temkin equations. The equilibrium data fit well in the Freundlich isotherm. The experimental data were analysed using three sorption kinetic models – the pseudo-first- and second-order equations, and the Elovich equation – to determine the best fit equation for the biosorption of lead ions onto mimosa tannin resin. Results show that the Elovich equation provides the best correlation for the biosorption process, whereas the pseudo-second-order equation also fits the experimental data well.

Keywords: mimosa tannin resin; lead biosorption; isotherm; biosorption kinetics; Elovich equation; pseudo-second-order equation; batch sorber; heavy metals.

DOI: 10.1504/IJEP.2008.020782

International Journal of Environment and Pollution, 2008 Vol.34 No.1/2/3/4, pp.57 - 70

Published online: 16 Oct 2008 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article