Abstract
The efficient removal of phenol from industrial wastewaters has increasingly become a significant environmental concern due to its high toxicity even at low concentrations. In this research work, phenol removal from aqueous solution was evaluated by using Amberlyst A26, a strong-base anion exchange resin, and Amberlite IRA-67, a weak-base anion exchange resin. The influence of phenol concentration in the feedstream was investigated as well as the effect of recirculation time. In addition, equilibrium data fitted to theLangmuir, Freundlich and Temkin isotherms showed that the best correlation is given by Langmuir isotherm for both resins (R2 = 0.99). Experimental results revealed that phenol uptake is a spontaneous process for Amberlyst A26 (?G° = -1.55 kJ mol-1), whereas it is not spontaneous for Amberlite IRA-67 (?G° = 3.06 kJ mol- 1). Finally, Amberlyst A26 was confirmed to be considerably more efficient than Amberlite IRA-67 for thepotential removal of phenol from industrial effluents.
