%0 Journal Article
%T Effect of Apricot Stone Activated Carbon Adsorbent on the Removal of Toxic Heavy Metals Ions from Aqueous Solutions
%J -
%D 2018
%X In this work, activated carbon was prepared from apricot stone (ASAC) waste to remove the toxic heavy metal ions (Aluminum ions and zinc ions) from aqueous solutions. The effect of different parameters such as PHs, adsorbent dose, the initial heavy metal ions concentration and contact time were investigated. Adsorption isotherm, kinetics and thermodynamics of metal ions on ASAC were studied. Equilibrium data were fitted to the Langmuir and Freundlich isotherm models. Langmuir isotherm provided the best fit to the equilibrium data with maximum adsorption capacity. Kinetic studies were also undertaken in terms of pseudo-first-order and pseudo-second-order kinetic models for heavy metal ions on ASAC. The adsorption process follows the pseudo- second order kinetic with high coefficients correlation. The thermodynamic parameters £¿G¡ã, £¿H¡ã and £¿S¡ã determined, showed that the adsorption of heavy metal ions onto ASAC was feasible, spontaneous and endothermic. The results showed that ASAC is an efficient adsorbent for the adsorptive removal of heavy metal ions from aqueous solutions
%K Apricot Stone
%K Activated Carbon
%K Heavy Metal
%K Adsorption Isotherm
%K Kinetics
%K Thermodynamics
%U http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=516&doi=10.11648/j.ijee.20180302.13