Modelling of Fe2+ oxidation by Thiobacillus ferrooxidans

Kumar, Shrihari R. ; Gandhi, K. S. (1990) Modelling of Fe2+ oxidation by Thiobacillus ferrooxidans Applied Microbiology and Biotechnology, 33 (5). pp. 524-528. ISSN 0175-7598

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Official URL: http://www.springerlink.com/content/t946xm24852645...

Related URL: http://dx.doi.org/10.1007/BF00172545

Abstract

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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