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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2789
Title: Adsorptive desulfurization by activated alumina
Authors: Srivastav A.
Srivastava V.C.
Published in: Journal of Hazardous Materials
Abstract: This study reports usage of commercial grade activated alumina (aluminum oxide) as adsorbent for the removal of sulfur from model oil (dibenthiophene (DBT) dissolved in n-hexane). Bulk density of alumina was found to be 1177.77 kg/m3. The BET surface area of alumina was found to decrease from 143.6 to 66.4 m2/g after the loading of DBT at optimum conditions. The carbon-oxygen functional groups present on the surface of alumina were found to be effective in the adsorption of DBT onto alumina. Optimum adsorbent dose was found to be 20 g/l. The adsorption of DBT on alumina was found to be gradual process, and quasi-equilibrium reached in 24 h. Langmuir isotherm best represented the equilibrium adsorption data. The heat of adsorption and change in entropy for DBT adsorption onto alumina was found to be 19.5 kJ/mol and 139.2 kJ/mol K, respectively. © 2009 Elsevier B.V. All rights reserved.
Citation: Journal of Hazardous Materials (2009), 170(43864): 1133-1140
URI: https://doi.org/10.1016/j.jhazmat.2009.05.088
http://repository.iitr.ac.in/handle/123456789/2789
Issue Date: 2009
Keywords: Adsorption
Alumina
Desulfurization
Dibenzothiophene
Isotherm study
Kinetic study
Thermodynamics
ISSN: 3043894
Author Scopus IDs: 26642202800
35565811700
Author Affiliations: Srivastav, A., 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
Funding Details: Authors are thankful to the Ministry of Human Resource and Development, Government of India, for providing financial support to undertake the work. One of the author, VCS, is thankful to IIT Roorkee for providing financial grant for carrying out this research work.
Corresponding Author: Srivastava, V.C.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India; email: vimalcsr@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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