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Kinetic and equilibrium studies of adsorption of Pb(II) on low cost agri-waste adsorbent Jute Stick Powder Alam, Jahangir Uddin, Mohammad Nasir Biosorbent Pb-removal Ion-exchange Langmuir isotherm Infrared spectroscopy Jute Stick Powder (JSP) A lingo-cellulosic material Jute Stick Powder was used as a biosorbent to remove Pb(II) ions from aqueous solution and the biosorption behavior was investigated as a function of pH, metal ion concentration, adsorbent dosages and agitation time. Sorption binding sites present in JSP was assessed by Infrared spectroscopy (IR) and Scanning Electron Micrograph (SEM). The determined experimental data were fitted to some common kinetic and equilibrium models. Langmuir isotherm and pseudo-second-order kinetic model gave better fit to experimental data. The study revealed that spontaneous ion-exchange and complexation process involved in the adsorption mechanism. When the repeated adsorption-desorption cycles were performed, JSP kept its adsorptive efficiency even after three cycles of reuse. Atlanta Publishing House LLC 2019-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1886 10.5155/eurjchem.10.4.295-304.1886 European Journal of Chemistry; Vol. 10 No. 4 (2019): December 2019; 295-304 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1886/pdf_1886 Copyright (c) 2019 Authors