Bioleaching of Iron and Zinc from a galvanized steel waste from automotive industry using Acidithiobacillus thiooxidans: a case of study of the bajío area in México

Authors

  • Francisco Armando Granados-Contreras School of Engineering and Sciences, Tecnológico de Monterrey, Campus Querétaro, Querétaro, México
  • Vivian Hayde Aguilar-Molina School of Engineering and Sciences, Tecnológico de Monterrey, Campus Querétaro, Querétaro, México
  • Grisel Fierros-Romero School of the Environment, Florida A&M University, Tallahassee, Florida, United States of America
  • David Enrique Zazueta-Álvarez Departamento de Ingeniería en Tecnología Ambiental de la Universidad Politécnica de Durango, México
  • Hiram Medrano-Roldán Departamento de Ingeniería en Tecnología Ambiental de la Universidad Politécnica de Durango, México
  • Marlenne Gómez Ramírez Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Instituto Politécnico Nacional, Querétaro, México
  • Norma Gabriela Rojas-Avelizapa Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Instituto Politécnico Nacional, Querétaro, México

DOI:

https://doi.org/10.5377/nexo.v36i02.15994

Keywords:

Bioleaching, Acidithiobacillus thiooxidans, Zinc, Iron, waste valorization

Abstract

Biohydrometallurgy has been defined as a collection of techniques that involve the use of microbial metabolisms, such as the bacterium Acidithiobacillus thiooxidans, for the extraction of metals.  Therefore, in the current study, we tested the potential of a pure culture of A. Thiooxidans in the removal of zinc and iron from galvanized waste of the automotive industry. Starkey medium was employed and was added 0.5% w/v of solid sample, and incubation took place at 30°C, and 180 rpm for 7 days. The experiment showed a biological removal of 100% of Fe and Zn after 72 hours, as shown with the measurements taken using inductively coupled plasma spectrophotometer (ICP-OES). Additionally, an increase of the concentration of sulphates is reported alongside the process. The present study thus suggests that a fast, efficient, and low energy biological process for the recovery of these metals coming from galvanized steel waste is possible.

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Published

2023-03-31

How to Cite

Granados-Contreras, F. A. ., Aguilar-Molina, V. H. ., Fierros-Romero, G. ., Zazueta-Álvarez, D. E. ., Medrano-Roldán, H. ., Gómez Ramírez, M. ., & Rojas-Avelizapa , N. G. . (2023). Bioleaching of Iron and Zinc from a galvanized steel waste from automotive industry using Acidithiobacillus thiooxidans: a case of study of the bajío area in México. Nexo Scientific Journal, 36(02), 29–37. https://doi.org/10.5377/nexo.v36i02.15994

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