Polymer composite - A potential biomaterial for the removal of reactive dye

Poly pyrrle saw dust composite was prepared by reinforcement of natural wood saw dust (obtained from euphorbia tirucalli l wood) and poly pyrrole matrix phase. the present study investigates the adsorption behaviour of poly pyrrole saw dust composite towards reactive dye. the batch adsorption studies were carried out by varying solution ph,initial dye concentration,contact time and temperature. the kinetic study showed that adsorption of reactive red by ppc was best represented by pseudo-second order kinetics with ion exchange adsorption. the equilibrium data were analyzed by freundlich and langmuir isotherm model. the equilibrium isotherm data were fitted well with langmuir isotherm model. the maximum monolayer adsorption capacities calculated by langmuir model were 204.08 mg/g for reactive red at 303 k. the thermodynamic parameters suggest the spontaneous,endothermic nature of ion exchange adsorption with weak vader walls force of attraction. activation energy for the adsorption of reactive by poly pyrrole composite was 11.6387 kj/mole,isosteric heat of adsorption was 48.5454 kj/mole also supported the ion exchange adsorption process in which forces of attraction between dye molecules and ppc is weak. © 2012 hindawi publishing corporation.