C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 1/20 (2006.01) C02F 3/28 (2006.01) C02F 3/34 (2006.01) C12N 1/32 (2006.01) C12P 3/00 (2006.01) G21F 9/18 (2006.01)
Patent
CA 2228063
The invention concerns sulphate-reducing gram-negative bacterial strains which grow under anaerobic conditions at pH-values between 3.9 and 9.5 and temperatures between 3 and 45 ~C and which reduce sulphate to sulphide, utilize methanol as a carbon and energy source, do not require any carbon or energy source apart from methanol and are tolerant to metals. The invention can be used to decontaminate anaerobic water contaminated with sulphuric acid, metals and radioactive substances, in particular the decontamination of shaft and flood water from abandoned uranium mines or wash water from soil- decontamination plants.
L'invention concerne de nouvelles souches de bactéries à Gram négatif réductrices de sulfate qui se développent dans des conditions anaérobies, à des pH compris entre 3,9 et 9,5 et à des températures comprises entre 3 et 45 ·C et réduisent le sulfate en sulfure, utilisent le méthanol comme source de carbone et d'énergie, ne requièrent pas d'autre source de carbone ou d'énergie en dehors du méthanol et sont tolérantes aux métaux. L'invention peut s'utiliser pour décontaminer des eaux sulfuriques, chargées en métaux et sous contamination radioactive, notamment pour décontaminer des eaux de puits et des eaux d'injection de mines d'uranium abandonnées ou des eaux de lavage provenant d'installations de nettoyage de sols.
Babel Wolfgang
Friedrich Silke
Hard Barbara
Kirby Eades Gale Baker
Ufz-Umweltforschungszentrum Leipzig-Halle Gmbh
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