Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4392405 | European Journal of Soil Biology | 2007 | 5 Pages |
Abstract
Weathering of the arsenopyrite-rich tailings of the Carnoulès abandoned mining site (Gard, France) results in the formation of acid mine waters heavily loaded with arsenic. Dissolved arsenic present in the seepage waters is precipitated within a few meters from the bottom of the tailing dam by microorganisms. From these effluents, we have isolated and characterized a Gram negative bacterium involved in this bioremediation process. This bacterium, which belongs to the Thiomonas genus, is very efficient in removing arsenite from contaminated acidic waters by oxidizing it to arsenate, which precipitates.
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Authors
Katia Duquesne, Aurélie Lieutaud, Jeanine Ratouchniak, Andrés Yarzábal, Violaine Bonnefoy,