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Equilibrium, Kinetic and Thermodynamic Studies on Biosorption of Cd (II) and Pb (II) from Aqueous Solution Using a Spore Forming Bacillus Isolated from Wastewater of a Leather Factory
Abstract:The equilibrium, thermodynamics and kinetics of the biosorption of Cd (II) and Pb(II) by a Spore Forming Bacillus (MGL 75) were investigated at different experimental conditions. The Langmuir and Freundlich, and Dubinin-Radushkevich (D-R) equilibrium adsorption models were applied to describe the biosorption of the metal ions by MGL 75 biomass. The Langmuir model fitted the equilibrium data better than the other models. Maximum adsorption capacities q max for lead (II) and cadmium (II) were found equal to 158.73mg/g and 91.74 mg/g by Langmuir model. The values of the mean free energy determined with the D-R equation showed that adsorption process is a physiosorption process. The thermodynamic parameters Gibbs free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) changes were also calculated, and the values indicated that the biosorption process was exothermic and spontaneous. Experiment data were also used to study biosorption kinetics using pseudo-first-order and pseudo-second-order kinetic models. Kinetic parameters, rate constants, equilibrium sorption capacities and related correlation coefficients were calculated and discussed. The results showed that the biosorption processes of both metal ions followed well pseudo-second-order kinetics.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328674Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1718
 H. Ucun, Y.K. Bayhana, Y. Kaya, A. Cakici, O.F. Algur, "Biosorption of lead (II) from aqueous solution by cone biomass of Pinus sylvestris," Desalination, vol. 154, no. 3, pp. 233-238, May 2003.
 M. Athar, S. Vohora, "Heavy metals and environment," New Age. International Publishers, New Dehli, 1995.
 S. Tunali, T. Akar, A.S. ├ûzcan, I. Kiran, A. ├ûzcan, "Equilibrium and kinetics of biosorption of lead(II) from aqueous solution by cephalosporium," Separation and Purification Technology, vol. 47, no. 3, pp. 105-112, January 2006.
 Y. Pingh, Y. Qiming, J. Bo, L. Zaho, "Biosoration removal of cadmium from aqueous solution by using pretreated fungal biomass cultured from starch wastewater," Wat. Res., vol. 33, no. 8, pp. 1960-1963, June 1999.
 M.T. Ganji, M. Khosravi, R. Rakhshaee, "Biosorption of Pb, Cd, Cu and Zn from the wastewater by treated Azolla filiculoides with H2O2/MgCl2," International Journal of Environmental Science & Technology, vol. 1, no. 4, pp. 265-271, winter 2005.
 H. Xu, Y. Liu, J.H. Tay, "Effect of pH on nickel biosorption by aerobic granular sludge," Bioresource technol., vol. 97, no. 3, pp. 359-363, February 2006.
 T. Bahadir, G. Bakan, L. Altas, H. Buyukgungor, "The investigation of lead removal by biosorption: An application at storage battery industry wastewaters," Enzyme and Microb. Tech., vol. 41, no. 1-2, pp. 98-102. July (2007).
 T.J. Beveridge, "The role of cellular design in bacterial metal accumulation and mineralization," Annu Rev Microbiol, vol. 43, pp. 147-171, October 1989.
 M. Venkata Subbaiah, Y. Vijaya, A. Subba Reddy, G. Yuvaraja, A. Krishnaiah, "Equilibrium, kinetic and thermodynamic studies on the biosorption of Cu(II) onto Trametes versicolor biomass," Desalination, vol. 276, no. 1-3, pp. 310-316, August 2011.
 C. Shamik, C. Sagnik, S. Papita , "Biosorption of Basic Green 4 from aqueous solution by Ananas comosus (pineapple) leaf powder," Colloids and Surfaces B: Biointerfaces, vol. 84, no. 2, pp. 520-527, Jun 2011.
 A. Sule, T. Alkim, G. Cem, "Biosorption of uranium(VI) by bifunctionalized low cost biocomposite adsorbent," Desalination, vol. 280, no. 1-3, pp. 354-362, October 2011.
 H. J.Michael, I. S. Ayebaemi, "Effect of metal ion concentration on the biosorption of Pb2+ and Cd2+ by Caladium bicolor (wild cocoyam)," African Journal of Biotechnology, vol. 4, no. 2, pp. 191-196, August 2005.
 M. A. Mar├¡a, H. Sergio, D. Jorge, D. Mar├¡a, A.Santos, "Biosorption of Cu(II), Zn(II), Cd(II) and Pb(II) by dead biomasses of green alga Ulva lactuca and the development of a sustainable matrix for adsorption implementation," Journal of Hazardous Materials, vol. 213-214, pp. 123-132. April 2012.