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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2801
Title: Studies on the adsorption of furfural from aqueous solution onto low-cost bagasse fly ash
Authors: Sahu A.K.
Mall I.D.
Srivastava V.C.
Published in: Chemical Engineering Communications
Abstract: The present study deals with the sorptive removal of furfural from aqueous solution by carbon-rich bagasse fly ash (BFA). Batch studies were performed to evaluate the influence of various experimental parameters, namely, initial pH (pH0), adsorbent dose, contact time, initial concentration, and temperature on the removal of furfural. Optimum conditions for furfural removal were found to be pH0 ? 5.5, adsorbent dose ? 4 g/L of solution, and equilibrium time ? 4 h. The adsorption followed pseudo-second-order kinetics. The effective diffusion coefficient of furfural is of the order of 10-13 m2/s. Equilibrium adsorption data on BFA was analyzed by Freundlich, Langmuir, Dubnin-Radushkevich, Redlich-Peterson, and Temkin isotherm equations using regression and error analysis. The Redlich-Peterson isotherm was found to best represent the data for furfural adsorption onto BFA. Adsorption of furfural on BFA is favorably influenced by a decrease in the temperature of the operation. Values of the change in entropy (?S0) and heat of adsorption (?H0) for furfural adsorption on BFA were negative. The high negative value of change in Gibbs free energy (?G0) indicates the feasible and spontaneous adsorption of furfural on BFA.
Citation: Chemical Engineering Communications (2008), 195(3): 316-335
URI: https://doi.org/10.1080/00986440701555274
http://repository.iitr.ac.in/handle/123456789/2801
Issue Date: 2008
Keywords: Adsorption kinetics
Adsorption thermodynamics
Bagasse fly ash
Furfural
Isotherms
ISSN: 986445
Author Scopus IDs: 15766212300
55664368900
35565811700
Author Affiliations: Sahu, A.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Mall, I.D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Funding Details: The authors are thankful to the Ministry of Human Resource and Development, Government of India, for providing financial support to undertake the work.
Corresponding Author: Mall, I.D.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, India
Appears in Collections:Journal Publications [CH]

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