Affiliation:
1. Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
Abstract
ABSTRACT
A novel species of
Acidimicrobium
appeared to be the predominant ferrous iron oxidizer in a mixed culture that effected the continuous, efficient extraction of nickel from a mineral concentrate at 49°C, but it was not isolated in pure culture. It outcompeted
Acidimicrobium ferrooxidans
, which was expected to have a major role in iron oxidation in reactors gassed with air, and was outnumbered at 49°C only by the sulfur-oxidizing
Acidithiobacillus caldus. Sulfobacillus
species were expected to compete with
Acidimicrobium
species when culture aeration was enriched with carbon dioxide, but they were a minor component of the populations with and without this enrichment.
Sulfobacillus thermosulfidooxidans
replaced the
Acidimicrobium
species and
Acidithiobacillus caldus
when the temperature was increased to 55°C.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
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