Thespesia Populnea Bark Carbon (TPC) was synthesized and employed for the removal of ferrous ions from aqueous solutions. The effects of pH, temperature and initial concentration of metal ion on the biosorption capacity were investigated. Two adsorption kinetic models were applied for analyzing the data. Langmuir and Freundlich isotherms from aqueous solution of ferrous ion on TPC were determined. The sorption follows pseudo-second- order kinetics. The results indicate that the highest percentage of ferrous ion adsorption was obtained for the smallest size of the sorbent particles. The thermodynamic parameters of the ferrous ions uptake on to the solid sorbents show that, the process was endothermic and spontaneous from the data stones.
