Growth of Thiobacillus ferrooxidans: a Novel Experimental Design for Batch Growth and Bacterial Leaching Studies.

Applied and Environmental Microbiology
P I Harvey, F K Crundwell

Abstract

The concentrations of ferrous and ferric ions change dramatically during the course of the batch experiments usually performed to study the kinetics of the bacterial oxidation of ferrous ions and sulfide minerals. This change in concentration of the iron species during the course of the experiment often makes it difficult to interpret the results of these experiments, as is evidenced by the lack of consensus concerning the mechanism of bacterial leaching. If the concentrations of ferrous and ferric ions were constant throughout the course of the batch experiment, then the role of the bacteria could be easily established, because the rate of the chemical leaching should be the same at a given redox potential in the presence and in the absence of bacteria. In this paper we report an experiment designed to obtain kinetic data under these conditions. The redox potential is used as a measure of the concentrations of ferrous and ferric ions, and the redox potential of the leaching solution is controlled throughout the experiment by electrolysis. The effects of ferrous, ferric, and arsenite ions on the rate of growth of Thiobacillus ferrooxidans on ferrous ions in this redox-controlled reactor are presented. In addition, the growth of...Continue Reading

References

Jan 1, 1971·Antonie van Leeuwenhoek·O H TuovinenH G Gyllenberg
Apr 1, 1967·Canadian Journal of Microbiology·D W DuncanC C Walden
Jul 1, 1984·Applied and Environmental Microbiology·J F BraddockE J Brown
Apr 15, 1992·Biotechnology and Bioengineering·K A Natarajan

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Citations

Jan 5, 2002·Applied and Environmental Microbiology·Naoya OhmuraHiroshi Saiki
Apr 6, 2001·Biotechnology and Bioengineering·F K Crundwell
Apr 22, 2005·Journal of Environmental Quality·Patrick DroguiJean-François Blais
Aug 15, 2001·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·A MalikP K Roychoudhury
Nov 26, 2009·Critical Reviews in Biotechnology·Hassan KorbekandiSajjad Abbasi
Jan 1, 2014·International Scholarly Research Notices·Siavash Iravani
Jul 2, 1999·Applied and Environmental Microbiology·T A FowlerF K Crundwell
Jul 2, 2008·Environmental Science & Technology·J Cameron Thrash, John D Coates
Jan 15, 2005·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Zhongyu LinYong Yang

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