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Published on: February 12, 2019
Fabrication of activated carbon from pomegranate husk by dual consecutive chemical activation for 4-chlorophenol
Sousan Hadi1,2, Ensiyeh Taheri1,3, Mohammad Mehdi Amin1,3
1Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Abstract:
In the present work, the fabrication of activated carbon (AC) from pomegranate husk (PHAC) by dual consecutive activation processes with ZnCl2 and NaOH as a chemical agent was studied. After that, the synthesized PHAC was used for adsorption of 4-chlorophenol (4CP) as a highly toxic compound for the human health and the environment. Different analytical techniques characterized the synthesized PHAC using ZnCl2/NaOH. The isotherms of N2 adsorption and desorption showed that total pore volume (Vtotal) and specific surface area (SBET) of PHAC were 0.404 cm3/g and 811.12 m2/g, respectively. The 4CP adsorption by PHAC studies revealed that the highest 4CP removal efficiency was 100% and obtained at 50, 100, and 150 mg/L of 4CP concentration with 2.5 g/L of PHAC. Based on the batch experiments, the highest 4CP removal was achieved at pH 6, 2.5 g/L of PHAC, and contact time of 60 min. The 4CP adsorption data of equilibrium and kinetics were successfully fitted to Langmuir's isotherm and Avrami fractional order.
