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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1932
Title: Adsorptive desulfurization by zinc-impregnated activated carbon: characterization, kinetics, isotherms, and thermodynamic modeling
Authors: Thaligari S.K.
Srivastava, Vimal Chandra
Prasad, Basheshwar Rajendra
Published in: Clean Technologies and Environmental Policy
Abstract: Sulfur oxides emission because of burning of liquid fuels has become a global environmental challenge. Refineries need to meet ever-stringent liquid fuel standards by using newer desulfurization methods. Present paper reports the results of the studies on adsorptive removal of sulfur compounds from model fuel by zinc-impregnated granular activated carbon (GAC). Zn-loaded adsorbent (Zn-GAC) prepared by wet impregnation method was characterized for its textural, morphological, and structural characteristics by different techniques like liquid nitrogen adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The adsorbent was further used for the removal of dibenzothiophene (DBT), a sulfur compound, from iso-octane. Equilibrium adsorption was obtained in 6 h. The equilibrium adsorption data were well represented by the Redlich–Peterson isotherm. Thermodynamic parameters were calculated by applying the van’t Hoff and Clausius–Clapeyron equations. Values of change in enthalpy and entropy were found to be 4.89 kJ/mol and 30 J/mol K, respectively. Isosteric heat of adsorption was correlated with surface coverage and heterogeneous nature of the Zn-GAC. © 2016, Springer-Verlag Berlin Heidelberg.
Citation: Clean Technologies and Environmental Policy (2016), 18(4): 1021-1030
URI: https://doi.org/10.1007/s10098-015-1090-y
http://repository.iitr.ac.in/handle/123456789/1932
Issue Date: 2016
Publisher: Springer Verlag
Keywords: Adsorption thermodynamics
Adsorptive desulfurization
Dibenzothiophene
Isosteric heat of adsorption
Zinc loaded granular activated carbon
ISSN: 1618954X
Author Scopus IDs: 57057860900
35565811700
15838004000
Author Affiliations: Thaligari, S.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Srivastava, V.C.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: vimalcsr@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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