International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 3 3 2013 March 18 Isotherm and Kinetics of As(III) Uptake from Aqueous Solution by Cinnamomum zeylanicum 34 41 EN Singh Hemlata 1 Department of physics, B. S. A. College, Mathura 281004, INDIA Rathi S.K. 2 Department of physics, B.S.A.C.E.T., Mathura 281004, INDIA Verma A.S. 3 Department of physics, Banasthali University, Rajasthan 304022, INDIA Jitareanu A. 1 University of Medicine and Pharmacy “Grigore T. Popa”, Faculty of Pharmacy, Universitatii Street 16, 700115 Iasi, ROMANIA Tataringa G. 2 Institute of Macromolecular Chemistry of Romanian University, ”Petru Poni”, Grigore Ghica Voda Street 41, 700487 Iasi, ROMANIA Zbancioc A-M. 3 Tuchilus C. 4 Balan M. 5 Stanescu U. 6 Gutta Sridevi 1 Department of Physics, V.R. Siddhartha Engineering College,Vijayawada,INDIA K.M. Gangotri 1 Photochemistry Laboratroy, Department of Chemistry, Jai Narain Vyas University, Jodhpur, Rajasthan-342001, INDIA Lal Mohan 2 Sharma S.K. 1 Department of Pure and Applied Chemistry, University of Kota, Kota, Rajasthan, INDIA Sharma I.K. 2 Department of Chemistry, University of Rajasthan, Jaipur, Rajasthan, INDIA Verma P.S. 3 Lisnyak V.V. 1 Kyiv National Taras Shevchenko University, 01601 Kyiv, UKRAINE Ischenko E.V. 2 V.N. Bakul Institute for Superhard Materials, 04074 Kyiv, UKRAINE Stratiichuk D.A. 3 Zaderko A.N. 4 Boldyrieva O.Yu. 5 Safonova V.V. 6 Yatsymyrskyi A.V. 7 M Al-Mamun 1 Department of Chemistry, Shahjalal University of Science and Technology, Sylhet3114, BANGLADESH Poostforush M. 2 Department of Polymer Engineering, Islamic Azad University, South Tehran Branch, Tehran, IRAN S.A. Mukul 3 School of Agriculture and Food Sciences, The University of Queensland, Brisbane Qld 4072, AUSTRALIA M.A. Subhan 4 > Research Paper 2012 12 30 2013 March 18 Cinnamon-bark (Cinnamomum zeylanicum) powder (CP) was investigated to evaluate the As(III) biosorption capability from aqueous solution. Biosorption behavior of As(III) was studied by batch column experiments. The adsorption phenomenon were analyzed with various experimental variables such as solution pH, sorbent amount, agitation speed, initial As(III) concentration and temperature. Maximum sorption was occurred at pH 5.0 while the equilibrium was established in 8 h. Langmuir and Freundlich isotherm models were employed for fitting the experimental data. The maximum sorption capacity of CP was observed to be 36.311 g g-1. The biosorption kinetics was speculated to follow pseudo-first-order kinetic model (R =0.998) with the sorption rate of 15.340×10-3 min-1 for the initial As(III) concentration of 500 g L-1. The biosorbent material was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The activation energy (E) and heat of biosorption (H) were calculated to be 17.780 and 30.724 kJ mol-1 respectively. Thermodynamic parameters were evaluated which revealed the spontaneous nature of biosorption on CP accompanied with the physical activated process. The break through characteristics of C. zeylanicum packed column was also investigated by small scale column tests (SSCT). Copyright@ International Science Community Association