Mujidat Omolara AREMU, A. O. ALADE, A. A. BELLO, K. K. SALAM

Kinetics and Thermodynamics of 2,4,6–Trichlorophenol Adsorption onto Activated Carbon Derived from Flamboyant Pod Bark

This work was designed to evaluate the suitability of activated carbon produced from flamboyant pod bark (FPBAC) for the removal of trichloro-phenol from polluted water. Various concentrations of trichloro-phenol polluted water was prepared and the adsorption experiments were performed at some selected adsorption factor ranges: agitation, 150 – 250 rpm; contact time, 60 – 120 min; adsorbent dose, 0.15 – 0.25 g; and initial trichloro-phenol concentrations, 100 – 200 mg/L. Results of the study showed that the selected adsorption factors has a significant effect on the adsorption capacity of FPBAC which was found to increase with increase agitation, contact time, adsorbent dosage and initial trichloro-phenol concentrations. The results of thermodynamic studies showed that the process is exothermic and Langmuir isotherm model with correlation coefficient (R2) of 0.919 best described the process. The kinetics of the process was best described by pseudo-second order model with correlation coefficient (R2) value of 0.999.

Keywords:

Flamboyant Pod Bark, Trichloro-phenol, Adsorption, Activated carbon,

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