IJESD 2016 Vol.7(7): 486-489 ISSN: 2010-0264
doi: 10.18178/ijesd.2016.7.7.825
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 Terms—Acidithiobacillus 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: b.cruz@uadec.edu.mx).
Lourdes Díaz-Jiménez and Dora A. Cortés-Hernández are with CINVESTAV-Saltillo. Av. Industria Metalúrgica No. 1062, Ramos Arizpe, Coahuila, 25900, México (e-mail: lourdes.diaz@cinvestav.edu.mx, dora.cortes@cinvestav.edu.mx).
Index Terms—Acidithiobacillus 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: b.cruz@uadec.edu.mx).
Lourdes Díaz-Jiménez and Dora A. Cortés-Hernández are with CINVESTAV-Saltillo. Av. Industria Metalúrgica No. 1062, Ramos Arizpe, Coahuila, 25900, México (e-mail: lourdes.diaz@cinvestav.edu.mx, dora.cortes@cinvestav.edu.mx).
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.
General Information
- ISSN: 2010-0264 (Print); 2972-3698 (Online)
- Abbreviated Title: Int. J. Environ. Sci. Dev.
- Frequency: Bimonthly
- DOI: 10.18178/IJESD
- Editor-in-Chief: Prof. Richard Haynes
- Managing Editor: Ms. Cherry L. Chen
- Indexing: Scopus (CiteScore 2022: 1.4), Google Scholar, CNKI, ProQuest, EBSCO, etc.
- E-mail: ijesd@ejournal.net
List group item headingWed
Some placeholder content in a paragraph below the heading and date.
List group item headingTues
Some placeholder content in a paragraph below the heading and date.
List group item headingMon
Some placeholder content in a paragraph below the heading and date.
List group item headingWed
Some placeholder content in a paragraph below the heading and date.
List group item headingTues
Some placeholder content in a paragraph below the heading and date.
List group item headingMon
Some placeholder content in a paragraph below the heading and date.
List group item headingWed
Some placeholder content in a paragraph below the heading and date.
List group item headingTues
Some placeholder content in a paragraph below the heading and date.
List group item headingMon
Some placeholder content in a paragraph below the heading and date.
List group item headingWed
Some placeholder content in a paragraph below the heading and date.
List group item headingTues
Some placeholder content in a paragraph below the heading and date.
List group item headingMon
Some placeholder content in a paragraph below the heading and date.
Call for Papers
When submitting papers for potential publication in IJESD, please submit an original editable file in .doc style file. All figures, tables, and equations, etc., should be embedded into the original file.