Wafa SAADİ, Souad Najar SOUİSSİ, Abdelmottaleb OUEDERNİ

Pomegranate Peels Precursor Used in the Synthesis of Activated Carbon: Application in the Wastewater Treatment

Activated carbon based pomegranate peels with potassium hydroxide as activating agent has been undertaken in the present study. Experiments were conducted to investigate the influence of different process parameters: the impregnation ratio, the temperature and the time of activation, followed by optimization. Activated carbon prepared in the optimum conditions with high specific surface area of 1403 m2g-1 and total pore volume of 0.7 cm3g-1 was evaluated for its ability to remove the 2-Nitrophenol from an aqueous solution in a batch process. Equilibrium studies were conducted in the range of 100-500 mg/L initial 2-Nitrophenol concentrations at temperature of 30°C. The experimental data were analyzed by the Langmuir, Freundlich and Temkin isotherm models. The kinetic models studies were also conducted. The pseudo-second order equation was the best applicable model to describe the adsorption process of 2-Nitrophenol onto optimized activated carbon compared to the commercial material.

Keywords:

Pomegranate peels, activated carbon potassium hydroxide, adsorption, 2-Nitrophenol,

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