Adsorption of As(V) from Aqueous Solution by the Fe(III)-Impregnated Sorbent Prepared from Sugarcane Bagasse and Applicability of Different Adsorption Models

Abstract:

In this study, a Fe(III)-impregnated sorbent was prepared from sugarcane bagasse and FeCl₃ solution via carbonization/activation in a muffle furnace at 500 °C for 4h. Batch experiments were carried out to determine the capacity of the Fe(III)-impregnated sorbent to adsorb As(V) from aqueous solution. The dynamical data fitted very well with the pseudo-second-order kinetic model and the calculated adsorption capacities of 4.8263, 5.2219 and 7.1225 mg/g were equal to the actual values of the experiments at temperatures of 20, 25, and 35 °C, respectively. The experimental data were modeled by Langmuir and Freundlich isotherm models. The Langmuir isotherm with R² values of 0.9926-0.9968 could yield better fits than the Freundlich isotherm, and the adsorption was endothermic, indicating monolayer adsorption of As(V).Freundlich isotherm, and the adsorption was endothermic, indicating monolayer adsorption of As(V).

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 509-515
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.509
• Online since: April 2013
• Authors: Hua Zhang, Xue Hong Zhang, Yi Nian Zhu, Mei Na Liang, Rong Rong Lu
• Keywords: Adsorption Removal, As(V), Isotherm, Sugarcane Bagasse

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