Iron- and sulfur-oxidizing activities of Acidithiobacillus ferrooxidans and their relation to the mechanism of pyrite biooxidation
| Authors | |
|---|---|
| Year of publication | 2002 |
| Type | Article in Proceedings |
| Conference | Zborník, XVIII. biochemický zjazd |
| MU Faculty or unit | |
| Citation | |
| Field | Biotechnology |
| Keywords | iron oxidation; sulfur oxidation; pyrite oxidation; Acidithiobacillus |
| Description | Based on rest and redox potentials and exchange current density, sulfur-oxidizing cells of A. ferrooxidans were not able to oxidize the pyrite electrod, in contrast to iron-oxidizing cells. Induction of iron-oxidizing system in bacteria grown on sulfur was an essential factor for pyrite oxidation. The above induction proceeded during a lag phase at a low pH, which may affect the overall process because the cells were sensitive to low pH especially in the lag phase resulting in cell death and autolysis. |
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