title: [Leaching of uranium containing phosphorites with heterotrophic microorganisms].
abstract: The problem of heterotrophic leaching of metals was tested with uranium-containing phosphorites under laboratory conditions with regard to possible technical applications. As leaching agents we used the acids of citric and lactic acid fermentation, carried out with a strain of Aspergillus niger in sulfite liquor under different conditions and with lactic acid bacteria in wheye. Up to 12% uranium were soluted with citric acid fermentation of Marocco phosphorite containing 153 ppm U in Aspergillus niger cultures within 27 days.
mesh_terms: D001031:Apatites / Q000378:metabolism*; D001234:Aspergillus niger / Q000378:metabolism*; D001419:Bacteria / Q000378:metabolism*; D002951:Citrates / Q000378:metabolism; D019343:Citric Acid; D005285:Fermentation; D007773:Lactates / Q000378:metabolism; D019344:Lactic Acid; D014501:Uranium / Q000378:metabolism*
chemical_list: D001031:Apatites; D002951:Citrates; D007773:Lactates; D019343:Citric Acid; D019344:Lactic Acid; D014501:Uranium
vernacular_title: Laugung von uranhaltigen Phosphoriten mit heterotrophen Mikroorganismen.