Bioleaching of Uranium Ore by a Novel Acidophilic Consortium at Different Acid Concentrations
This study examined bioleaching of uranium ore at different acid concentrations by a novel consortium culture combined with both mesophilic and moderately thermophilic acidophiles containing 4 species of bacteria and 1 species of fungus. Four plastic buckets were set up with uranium minerals at room temperature (about 27-32°C) at different acid concentration (6g/l and 15g/l) for acidification and initial pH of 1.6, 1.8 and 2.1 for bioleaching, respectively. Results showed that from a point of application in commercial uranium bioleaching, higher acidified concentrations of acid can shorten the duration and working cycles of uranium recovery, and a higher initial pH in bioleaching stage can reduce the usage of acid.
Edgardo R. Donati, Marisa R. Viera, Eduardo L. Tavani, María A. Giaveno, Teresa L. Lavalle, Patricia A. Chiacchiarini
Y. J. Liu et al., "Bioleaching of Uranium Ore by a Novel Acidophilic Consortium at Different Acid Concentrations", Advanced Materials Research, Vols. 71-73, pp. 457-460, 2009