Acidophilic bacteria in oxidation of elemental sulfur

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Authors

MANDL Martin ČEŠKOVÁ Pavla HELÁNOVÁ Šárka

Year of publication 2001
Type Article in Proceedings
Conference New trends in mineral processing IV
MU Faculty or unit

Faculty of Science

Citation
Field Biochemistry
Keywords sulfur oxidation; acidophilic bacteria; Thiobacillus
Description Oxidation of elemental sulfur by Acidithiobacillus ferrooxidans was characterized by kinetic and physiological parameters. The bacterial cell attachment on the sulfur surface corresponded to the Langmuir isotherm at the beginning of sulfur oxidation. A violet-colored metabolite from the cultures was isolated and partially characterized. The proposed chemical structure indicated its possible role in cell adsorption onto elemental sulfur during the cell growth. Sulfur limitation and oxidation activity of free cells were fundamental to explain data of sulfur biooxidation. The role of adsorbed bacteria in sulfur solubilization was discussed.
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