Influence of heterotrophic microbial growth on biological oxidation of pyrite.

@article{Marchand2002InfluenceOH,
  title={Influence of heterotrophic microbial growth on biological oxidation of pyrite.},
  author={Eric A. Marchand and Joann Silverstein},
  journal={Environmental science & technology},
  year={2002},
  volume={36 24},
  pages={5483-90}
}
The rate and extent of pyrite oxidation by the iron-oxidizing bacteria Acidithiobacillus ferrooxidans was limited by the growth of the heterotrophic microbe Acidiphilium acidophilum. In batch systems containing a mixture of both organisms, the maximum zero-order rate of ferric iron accumulation was about 1.4 mg of Fe3+ L(-1) d(-1) as compared to 9.4 mg of Fe3+ L(-1) d(-1) for pure cultures of A. ferrooxidans under the same conditions. Pyrite oxidation was limited in cases where both cultures of… CONTINUE READING

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