General Information
    • ISSN: 2010-0264 (Print)
    • Abbreviated Title: Int. J. Environ. Sci. Dev.
    • Frequency: Monthly
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
    • Executive Editor: Ms. Nancy Y. Liu
    • Abstracting/ Indexing: Scopus (Since 2019), Chemical Abstracts Services (CAS), EBSCO, CABI, Ulrich Periodicals Directory, Electronic Journals Library, Crossref, ProQuest.
    • E-mail:
    • Twitter: @IJESD1
The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
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IJESD 2016 Vol.7(7): 486-489 ISSN: 2010-0264
doi: 10.18178/ijesd.2016.7.7.825

Characterization and Biotechnological Clean-up Process of a TiO2 Spent Catalyst

Brenda R. Cruz-Ortiz, Lourdes Díaz-Jiménez, and Dora A. Cortés-Hernández
Abstract—TiO2-based catalysts are widely used in Claus units in natural gas-processing plants, for the conversion of hydrogen sulfide to elemental sulfur. As a result of the constant reaction cycles the catalyst suffered sulfur deposition on its active sites, resulting in a decrease of its catalytic activity. In this work a biodesulfurization process on a TiO2 spent catalyst was performed. Physicochemical characterization of the catalyst by scanning electron microscopy, X-ray diffraction, specific surface area, and elemental analysis was performed. Thiobacillus thiooxidans was the microorganism employed to eliminate the sulfur from the spent catalyst. A sulfur reduction of 60 wt.% was obtained following 30 days of treatment.

Index TermsAcidithiobacillus thiooxidans, microbial desulfurization, spent catalyst, TiO2.

Brenda R. Cruz-Ortiz is with the Ceramics Department at Autonomous University of Coahuila, México. Blvd. V. Carranza y José Cárdenas Valdés, C.P. 25280, Saltillo, Coah, México (e-mail:
Lourdes Díaz-Jiménez and Dora A. Cortés-Hernández are with CINVESTAV-Saltillo. Av. Industria Metalúrgica No. 1062, Ramos Arizpe, Coahuila, 25900, México (e-mail:,


Cite: Brenda R. Cruz-Ortiz, Lourdes Díaz-Jiménez, and Dora A. Cortés-Hernández, "Characterization and Biotechnological Clean-up Process of a TiO2 Spent Catalyst," International Journal of Environmental Science and Development vol. 7, no. 7, pp. 486-489, 2016.

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