PMID: 45294Jan 1, 1979

Pyrite oxidation by Thiobacillus ferrooxidans with special reference to the sulphur moiety of the mineral

Antonie van Leeuwenhoek
G J Arkesteyn


Available cultures of Thiobacillus ferrooxidans were found to be contaminated with bacteria very similar to Thiobacillus acidophilus. The experiments described were performed with a homogeneous culture of Thiobacillus ferrooxidans. Pyrite (FeS2) was oxidized by Thiobacillus ferrooxidans grown on iron (Fe2+), elemental sulphur (S0) or FeS2. Evidence for the direct utilization of the sulphur moiety of pyrite by Thiobacillus ferrooxidans was derived from the following observations: a. Known inhibitors of Fe2+ and S0 oxidation, NaN3 and NEM, respectively, partially abolished FeS2 oxidation. b. A b-type cytochrome was detectable in FeS2- and S0-grown cells but not in Fe2+-grown cells. c. FeS2 and S0 reduced b-type cytochromes in whole cells grown on S0. d. CO2 fixation at pH 4.0 per mole of oxygen consumed was the highest with S0, lowest with Fe2+ and medium with FeS2 as substrate. e. Bacterial Fe2+ oxidation was found to be negligible at pH 5.0 whereas both FeS2 and S0 oxidation was still appreciable above this pH. f. Separation of pyrite and bacteria by means of a dialysis bag caused a pronounced drop of the oxidation rate which was similar to the reduction of pyrite oxidation by NEM; indirect oxidation of the sulphur moiety by Fe...Continue Reading


Jul 1, 1986·The Veterinary Quarterly·F JongejanG Uilenberg
Sep 5, 1988·Biotechnology and Bioengineering·G AndrewsT Hansson


Mar 1, 1975·Canadian Journal of Microbiology·R Guay, M Silver
Mar 1, 1978·Mikrobiologiia·L A GromovaG I Karavaĭko
Jan 1, 1970·Archiv für Mikrobiologie·T Peeters, M I Aleem
Dec 1, 1974·Canadian Journal of Microbiology·C Bodo, D G Lundgren
Dec 1, 1966·Journal of Bacteriology·P MargalithD G Lundgren
Apr 1, 1967·Canadian Journal of Microbiology·D W DuncanC C Walden
Oct 1, 1967·Journal of Bacteriology·M P Silverman
Nov 1, 1956·Journal of Bacteriology·S A BRALEYW W LEATHEN

Related Concepts

Energy Metabolism
Carbon Dioxide
Ferrous Compounds
Hydrogen-Ion Concentration
Thiobacillus thioparus
Fe-S2 marcosite of pyrite

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