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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1958
Title: Adsorption of selenium using bagasse fly ash
Authors: Wasewar K.L.
Prasad B.
Gulipalli S.
Published in: Clean - Soil, Air, Water
Abstract: The present work involves the study of Se(IV) adsorption onto bagasse fly ash. The adsorbents were coated with a ferric chloride solution for the effective removal of selenium. The physico-chemical characterization of the adsorbent was carried out using standard methods, e.g., proximate analysis, scanning electron microscopy, Fourier transform infrared spectroscopy, thermo-gravimetric analysis and differential thermal analysis. Batch experiments were carried out to determine the effect of various parameters such as adsorbent dose, initial pH, contact time, and temperature on the adsorption process. Results obtained from these studies were analyzed using various kinetic models and isotherms. Se(IV) adsorption onto adsorbent was high at low pH values, and decreased with an increase in initial pH. A temperature study showed that the uptake of Se(IV) was greatest at 293 K, within the temperature range studied. The parameters of pseudo first order, pseudo second order, and Weber-Morris intra-particle kinetic models were determined. Equilibrium isotherms were analyzed using Langmuir, Freundlich, and Temkin isotherms. Error analyses were also carried out using hybrid fractional error function and Marquardt's percent standard deviation. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Citation: Clean - Soil, Air, Water (2009), 37(7): 534-543
URI: https://doi.org/10.1002/clen.200800183
http://repository.iitr.ac.in/handle/123456789/1958
Issue Date: 2009
Keywords: Adsorption
Bagasse fly ash (BFA)
Equilibrium
Error analysis
Kinetics
Selenium
Thermal degradation
ISSN: 18630650
Author Scopus IDs: 6506156879
15838004000
34067559700
Author Affiliations: Wasewar, K.L., Department of Chemical Engineering, Visveswarya National Institute of Technology (VNIT), Nagpur, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology (IIT), Roorkee, India
Gulipalli, S., Department of Chemical Engineering, Indian Institute of Technology (IIT), Roorkee, India
Corresponding Author: Wasewar, K. L.; Department of Chemical Engineering, Visveswarya National Institute of Technology (VNIT), Nagpur - 440011, Maharashtra, India; email: k_wasewar@rediffmail.com
Appears in Collections:Journal Publications [CH]

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