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Removal of three bromophenols (BPs), namely, 2-bromophenol (2-BP), 4-bromophenol (4-BP), and 2,4-dibromophenol (DBP), from aqueous solutions using hazelnut shell-derived activated carbon (HSAC) as the adsorbent had been performed by varying… Click to show full abstract
Removal of three bromophenols (BPs), namely, 2-bromophenol (2-BP), 4-bromophenol (4-BP), and 2,4-dibromophenol (DBP), from aqueous solutions using hazelnut shell-derived activated carbon (HSAC) as the adsorbent had been performed by varying parameters such as pH, initial concentration, contact time, and ionic strengths by using a batch equilibrium method. The maximum removal percentages of three BPs were observed in the pH range of 1 to 9. It was found that the adsorption equilibrium was reached within 5 min and the pseudo-second-order model was better fitted than the pseudo-first-order model for the description of adsorption kinetics. The adsorption equilibrium data could be well fitted by the Langmuir model with the maximum adsorption capacities of 222.2 mg g−1 for 2-BP, 196.1 mg g−1 for 4-BP, and 232.6 mg g−1 for DBP, respectively. HSAC indicated great potential in removal of BPs from an aqueous solution.
Journal Title: Chemistry Letters
Year Published: 2017
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