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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1950
Title: Batch study, Equilibirum and kinetics of adsorption of selenium using rice husk ash (RHA)
Authors: Sekhararao Gulipalli C.
Prasad, Basheshwar Rajendra
Wasewar K.L.
Published in: Journal of Engineering Science and Technology
Abstract: The present work involves the study of Se(IV) adsorption onto rice husk ash (RHA). The adsorbents were coated with the ferric chloride solution for the effective removal of selenium. The physico-chemical characterization of the adsorbents was carried out using standard methods, e.g., proximate analysis, scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FTIR), thermo-gravimetric (TGA) and differential thermal analysis (DTA), etc. Batch experiments were carried out to determine the effect of various factors such as adsorbent dose (w), initial pH, contact time (t), and temperature (T) on adsorption process. Se(IV) adsorption is high at low pH values, and decreased with the rise in initial pH. Temperature study shows that the uptake of Se(IV) is more at 293 K within the temperature range studied. The parameters of Pseudo-First order, Pseudo-Second order kinetics, Weber-Morris intra particle kinetics have been determined. Equilibrium isotherms have been analyzed using Langmuir isotherm, Freundlich isotherm and Temkin isotherm. Error analysis has also been done using hybrid fractional error function (HYBRID) and Marquardt's percent standard deviation (MPSD). © School of Engineering, Taylor?s University.
Citation: Journal of Engineering Science and Technology (2011), 6(5): 590-609
URI: http://repository.iitr.ac.in/handle/123456789/1950
Issue Date: 2011
Keywords: Adsorption
Batch study
Equilibrium
Kinetics
Rice husk ash (RHS)
Selenium
Thermal degradation
ISSN: 18234690
Author Scopus IDs: 50263106500
15838004000
6506156879
Author Affiliations: Sekhararao Gulipalli, C., Department of Chemical Engineering, Indian Institute of Technology (IIT), Roorkee - 247667, Uttarakhand, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology (IIT), Roorkee - 247667, Uttarakhand, India
Wasewar, K.L., Department of Chemical Engineering, Visveswarya National Institute of Technology (VNIT), Nagpur - 440010, Maharashtra, India
Corresponding Author: Wasewar, K. L.; Department of Chemical Engineering, Visveswarya National Institute of Technology (VNIT), Nagpur - 440010, Maharashtra, India; email: K_wasewar@rediffmail.com
Appears in Collections:Journal Publications [CH]

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