doi: 10.18178/ijesd.2016.7.7.825
Characterization and Biotechnological Clean-up Process of a TiO<sub>2</sub> Spent Catalyst
Brenda R. Cruz-Ortiz1
,
Lourdes Díaz-Jiménez2 ,
Dora A. Cortés-Hernández2
- 1the Ceramics Department at Autonomous University of Coahuila, México. Blvd. V. Carranza y José Cárdenas Valdés, C.P. 25280, Saltillo, Coah, México
- 2CINVESTAV-Saltillo. Av. Industria Metalúrgica No. 1062, Ramos Arizpe, Coahuila, 25900, México
Abstract
TiO<sub>2</sub>-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 TiO<sub>2</sub> spent catalyst was performed. Physicochemical characterization of the catalyst by scanning electron microscopy, X-ray diffraction, specific surface area, and elemental analysis was performed. <em>Thiobacillus thiooxidans</em> 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.
Keywords
- Acidithiobacillus thiooxidans
- microbial desulfurization
- spent catalyst
- TiO 2
How to Cite
Brenda R. Cruz-Ortiz, Lourdes Díaz-Jiménez, and Dora A. Cortés-Hernández, "Characterization and Biotechnological Clean-up Process of a TiO<sub>2</sub> Spent Catalyst," International Journal of Environmental Science and Development, vol. 7, no. 7, pp. 486-489, 2016. https://doi.org/10.18178/ijesd.2016.7.7.825
Copyright & License
Copyright © 2016 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).