KINETIC SORPTION STUDY OF PHENOL ONTO ACTIVATED CARBON DERIVED FROM FLUTED PUMPKIN STEM WASTE (Telfairia occidentalis Hook. F) release_rev_7ede7acc-4b3e-41c3-8e19-46bb73ecfce6

Abstract

Fluted activated carbon obtained from fluted pumpkin stem waste can be harnessed as a useful adsorbent for the removal of phenol from aqueous solution. The contact time data was modeled using pseudo first-order, pseudo second order, Elovich, intra-particle and liquid-film diffusion. The kinetic data favored pseudo second-order with regression value of 0.987. Thermodynamic parameters ∆H o , ∆S o , and ∆G o of the adsorption of phenol onto fluted activated carbon were negative which revealed exothermic nature of the sorption process, strong bond formation between the adsorbent and adsorbate molecules and the spontaneous nature of the adsorption with a high preference for phenol.
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