Abstract: The biosorption data of trivalent chromium by Streptomyces rimosus has been used for kinetic studies based on fractional power, Elovich, pseudo-first order and pseudo-second order rate expressions. The time-dependent Cr (III) biosorption data were well-described by pseudo-second-order kinetic model. The intraparticle diffusion is not the rate-limiting step for the whole reaction. The Temkin, Freundlich, Dubinin-Radushkevich and Langmuir biosorption models were used for the mathematical description of the biosorption equilibrium of Cr (III) ions to S. rimosus. It was found that the biosorption equilibrium data fitted well to the Langmuir.
M.N. Sahmoune , K. Louhab and A. Boukhiar , 2008. Kinetic and Equilibrium Models for the Biosorption of Cr (III) on Streptomyces rimosus. Research Journal of Applied Sciences, 3: 294-301.