Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2815
Title: Removal of Orange-G and Methyl Violet dyes by adsorption onto bagasse fly ash - Kinetic study and equilibrium isotherm analyses
Authors: Mall I.D.
Srivastava, Vimal Chandra
Agarwal N.K.
Published in: Dyes and Pigments
Abstract: In the study, bagasse fly ash (BFA) (generated as waste material from sugar mill), was used as an adsorbent for the removal of Orange-G (OG), and Methyl Violet (MV), from aqueous solution. Batch studies were performed to address various experimental parameters like pH, contact time, adsorbent dose and initial concentration for the removal of these dyes. Effective pH for OG and MV removal were 4 and 9, respectively. Greater percentage of dye was removed with decrease in the initial concentration of dyes, and increase in amount of adsorbent used. Kinetic study showed that the adsorption of dyes on BFA was a gradual process. Quasi-equilibrium reached in 4 h. Pseudo-first-order, pseudo-second-order, Bangham and intra-particle particle diffusion models were used to fit the experimental data. Pseudo-second-order rate equation was able to provide realistic description of adsorption kinetics. Equilibrium isotherms were analysed by Freundlich, Langmuir, Redlich-Peterson, Dubnin-Radushkevich, and Tempkin isotherm equations using correlation coefficients and five different error functions. Freundlich equation is found to best represent the equilibrium data for OG-BFA system while Redlich-Peterson equation better fits the data for MV-BFA system. Thermodynamic study showed that adsorption of MV on BFA (with a more negative Gibbs free energy value) is more favoured among the dyes studied. BFA which was used without any pretreatment showed high surface area, pore volume and pore size exhibiting its potential to be used as an adsorbent for the removal of OG and MV. © 2005 Elsevier Ltd. All rights reserved.
Citation: Dyes and Pigments (2006), 69(3): 210-223
URI: https://doi.org/10.1016/j.dyepig.2005.03.013
http://repository.iitr.ac.in/handle/123456789/2815
Issue Date: 2006
Keywords: Adsorption
Bagasse fly ash
Dye removal
Error analyses
Kinetic study
ISSN: 1437208
Author Scopus IDs: 55664368900
35565811700
56948761700
Author Affiliations: Mall, I.D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee - 247667, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee - 247667, India
Agarwal, N.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee - 247667, India
Corresponding Author: Mall, I.D.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee - 247667, India; email: id_mall2000@yahoo.co.in
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.