Anaerobic-aerobic bioremediation of contaminated water
AssigneeThe Regents of the University of California
InventorsShaily MAHENDRA, Alexandra POLASKO
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Abstract
Methods and co-cultures for biodegrading contaminants are described. A method can include contacting a contaminated substance with a microbial mixture under anaerobic conditions and causing degradation of contaminants by metabolism of the microbes in the microbial mixture. The co-culture can include aerobic microbes like Pseudonocardia and related genera along with anaerobic microbes of Dehalococcoides and related genera.
Claims55
A method for bioremediation of a contaminated substance, the substance being contaminated with a halogenated volatile organic compound (HVOC) and a HVOC stabilizer compound, the method comprising contacting the contaminated substance with a microbial mixture comprising a HVOC stabilizer-degrading aerobic microorganisms and HVOC-degrading anaerobic microorganisms in an amount sufficient to lower the concentration of the contaminating HVOC and HVOC stabilizer compounds in the contaminated substance.
A microbial mixture comprising a halogenated volatile organic compound (HVOC)-degrading anaerobic microorganism and a HVOC stabilizer-degrading aerobic microorganism.
A method for bioremediation of a contaminated substance, the method comprising contacting the contaminated substance with an effective amount of a HVOC stabilizer-degrading aerobic microorganism under anaerobic conditions and degrading one or more contaminants comprised in the contaminated substance by metabolism of the HVOC stabilizer-degrading aerobic microorganism after a transition to aerobic conditions.
A method for bioremediation of a contaminated substance, the method comprising contacting the contaminated substance with an effective amount of a Pseudonocardia bacterium and an effective amount of a Dehalococcoides bacterium and degrading one or more contaminants comprised in the contaminated substance by metabolism of the Pseudonocardia bacterium and the Dehalococcoides bacterium, wherein the contaminated substance periodically transitions between aerobic and anaerobic conditions.
A method of biodegrading one or more compounds, the method comprising:
- adding an effective amount of a mixture of Pseudonocardia and Dehalococcoides bacteria to a composition that comprises TCE and is under anaerobic conditions;
- degrading the TCE to form cDCE by metabolism of the Dehalococcoides bacteria under anaerobic conditions;
- and
- degrading the cDCE by metabolism of the Pseudonocardia bacteria after the composition transitions to aerobic conditions.
Dependencies are inferred from the claim text.