Metals tolerance in moderately thermophilic isolates from a spent copper sulfide heap, closely related to Acidithiobacillus caldus, Acidimicrobium ferrooxidans and Sulfobacillus thermosulfidooxidans
作者： E. L. J. Watkin , S. E. Keeling , F. A. Perrot , D. W. Shiers , M.-L. Palmer
DOI: 10.1007/S10295-008-0508-5
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摘要: Selective enrichments enabled the recovery of moderately thermophilic isolates with copper bioleaching ability from a spent sulfide heap. Phylogenetic and physiological characterization revealed that were closely related to Sulfobacillus thermosulfidooxidans, Acidithiobacillus caldus Acidimicrobium ferrooxidans. While exhibited similar characteristics their corresponding type strains, in general they displayed or greater tolerance high copper, zinc, nickel cobalt concentrations. Considerable variation was found between species several strains S. thermosulfidooxidans. It is concluded adaptation metals present heap which isolated contributed but did not entirely explain tolerances. Higher confer stronger performance, suggesting physical, mineralogical chemical process rate limiting for specific ore concentrate.
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