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International Journal of Photoenergy
Volume 2013, Article ID 578729, 4 pages
Research Article

Metallic Biosorption Using Yeasts in Continuous Systems

1Department of Chemical Engineering and Metallurgy, University of Sonora, Rosales y Boulevard Luis Encinas, Col. Centro., 83000 Hermosillo, Son, Mexico
2Research Center Nutrition and Development, A.C., Carretera a La Victoria km 0.6, 83304 Hermosillo, Son, Mexico

Received 4 January 2013; Accepted 1 July 2013

Academic Editor: Nabil Abdel-Jabbar

Copyright © 2013 Karla Miriam Hernández Mata et al. 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.


Mining effluents were found to be the main source of pollution by heavy metals of the surface water in the San Pedro River in Sonora, Mexico. The overall objective of this study was to determine the biosorption of Zn, Cu, Mn, and Fe with yeasts isolated from San Pedro River in a continuous system. The tests conducted in two reactors packed with zeolite connected in series. The first reactor was inoculated mixing two yeasts species, and the effluent of the first reactor was fed to second reactor. Subsequently, the first reactor was fed with contaminated water of San Pedro River and effluent from this was the second reactor influent. After 40 days of the experiment a reduction of 81.5% zinc, 76.5% copper, manganese 95.5%, and 99.8% of iron was obtained. These results show that the selected yeasts are capable of biosorbing zinc, copper, manganese, and iron under these conditions.