Application of mixed order rate equations to adsorption of methylene blue on mesoporous carbons

Static and kinetic studies on adsorption of methylene blue on four synthesized mesoporous carbons are presented. The carbon properties are analyzed by means of nitrogen adsorption. The static experiments are analyzed by means of Langmuir-Freundlich and Freundlich isotherms. The Lagergren, pseudo-second-order and mixed order as well as the multi-exponent equations are used in analysis of kinetic equilibria. The properties of rate equations are compared and analyzed. (C) 2009 Elsevier B.V. All rights reserved.