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The properties of a ferric ion-reducing system which catalyzes the reduction of ferric ion with elemental sulfur was investigated with a pure strain of Thiobacillus ferrooxidans. In anaerobic conditions, washed intact cells of the strain reduced 6 mol of Fe with 1 mol of elemental sulfur to give 6 mol of Fe, 1 mol of sulfate, and a small amount of sulfite.(More)
Microbiological leaching of synthetic cobaltous sulfide (CoS) was investigated with a pure strain of Thiobacillus ferroxidans. The strain could not grow on CoS-salts medium in the absence of ferrous ions (Fe). However, in CoS-salts medium supplemented with 18 mM Fe, the strain utilized both Fe and the sulfur moiety in CoS for growth, resulting in an(More)
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