Arsenic toxicity in bacterial oxidation of elemental sulfur

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Authors

MANDL Martin POKORNÁ Blanka GAVLASOVÁ Pavla HELÁNOVÁ Šárka BOUCHAL Pavel JANICZEK Oldřich HALLBERG Kevin

Year of publication 2004
Type Article in Proceedings
Conference Biometals 2004
MU Faculty or unit

Faculty of Science

Citation
Field Biochemistry
Keywords Arsenic toxicity; sulfur oxidation
Description Arsenic ions are released in the environment during bacterial arsenopyrite oxidation in sulfide wastes or biohydrometallurgy. Elemental sulfur can be formed as an intermediate during arsenopyrite oxidation. Its further biooxidation to sulfuric acid is inhibited by arsenic ions. The arsenic effects on bacterial iron oxidation have been previously described. This study investigated the inhibitory effects of arsenic on the oxidation of elemental sulfur by Acidithiobacillus ferrooxidans.
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