Acid Blue 80 Removal from Aqueous Solution by Activated Carbon Obtained from Nerium Oleander Fruits

The present work reports acid blue 80 (AB80) adsorption performances on the activated carbon prepared from Nerium oleander fruits (NAC). Langmuir isotherm model and pseudo second order were determined to be best fitting models for AB80 NAC, its maximum capacities calculated 88.03, 102.04, 113.96 mg g-1 at 25, 35, 45 °C, respectively. Also, efficiency of increased as pH decreased. While rate was found fast during first 60 minutes, velocity decreased with passing contact time. Moreover, via thermodynamic parameters, spontaneous, feasible, endothermic. From FTIR spectra, interactions carbonyl groups NAC molecules ?- ? stacking between possible adsorption.