ADSORPTION OF PB (II) IN AQUEOUS SOLUTION ON ACTIVATED CARBON PREPARED FROM ANIMAL BONESGUETTAF NAIMA, KADDOUR OMAR AND GHEZALI KATIAAbstract The objective of this study is the removal of lead (II) from water by adsorption on activated carbon, prepared from animal bones. The adsorption efficiency was evaluated for the carbonized raw material at 400 °C and after chemical activation. The adsorption results were about 91.28%, 90.78%, 89.26% at temperatures of 27 °C, 35 °C, 45°C respectively. It was determined that the adsorption system obeyed the pseudo-second order kinetic model by considering the value of the correlationcoefficient (R2 > 0.99) with an adsorption constant of 1.45 minute -1 at an ambient temperature of 27°C. The Langmuir isotherm gave a better fit considering the correlation coefficient values (R2 > 0.99). The results indicate that charcoal from carbonized animal bones could be used as an alternative and inexpensive adsorbent for the removal of lead ions from aqueous solutions, when the appropriate conditions are met. |