Abstract: The kinetic and the thermodynamic parameters for the adsorption of phenol in aqueous solution by bamboo-charcoal were studied. Researches of kinetics showed that adsorption of phenol by bamboo-charcoal can be dealt with pseudo first-order reaction. The apparent adsorption rate constants and activation energy were determined with different sizes of charcoal and at different temperatures. Researches of thermodynamics showed that the adsorption behavior of the bamboo-charcoal for phenol obeys the Langmuir isotherm model. The heat of adsorption is ΔH=-14.0kJ/mol, it means that the sorption process is a exothermic process, and ΔH<40kJ/mol means that the sorption process is mostly physical adsorption. At the same time, Gibbs free energy ΔG<0 indicates that the sorption process is a spontaneous process.

Key words: bamboo-charcoal, adsorption, phenol, kinetic parameters, thermodynamic parameters