Applied Microbiology and Biotechnology

, Volume 33, Issue 5, pp 524–528

Modelling of Fe2 + oxidation by Thiobacillus ferrooxidans

Authors

  • Shrihari R. Kumar
    • Department of Chemical EngineeringIndian Institute of Science
  • K. S. Gandhi
    • Department of Chemical EngineeringIndian Institute of Science
Biotechnology

DOI: 10.1007/BF00172545

Cite this article as:
Kumar, S.R. & Gandhi, K.S. Appl Microbiol Biotechnol (1990) 33: 524. doi:10.1007/BF00172545

Summary

The kinetics of oxidation of aqueous acidic ferrous sulphate by Thiobacillus ferrooxidans has been studied in a batch reactor. The contribution of cell wall envelopes to the oxidation rate has been shown to be negligible. A model which accounts for the oxidation of Fe2 +, death of bacteria due to Fe3 + poisoning, existence of an optimal pH and precipitation of Fe3 + has been proposed. The model is able to predict the concentration of Fe2 + and pH quite satisfactorily. The predictions of Fe3 + are not so accurate because of simplifying assumptions made about its precipitation.

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© Springer-Verlag 1990