Effect of hydrogen peroxide on the biodegradation of PCBs in anaerobically dechlorinated river sediments

The ability to initiate aerobic conditions in dechlorinated anaerobic sediments was tested using hydrogen peroxide as an oxygenation agent. Hydrogen peroxide additions to the sediment induced aerobic polychlorinated biphenyl (PCB) degraders as indicated first, by an increase in bacterial count and s...

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Bibliographic Details
Published in:Biodegradation (Dordrecht) 1993, Vol.4 (4), p.241-248
Main Authors: Anid, P.J, Ravest-Webster, B.P, Vogel, T.M
Format: Article
Language:English
Subjects:
aerobes
anaerobic aerobic sequential technique
anaerobic conditions
Anaerobiosis
Bacteria, Aerobic - metabolism
Bacteria, Anaerobic - metabolism
biodegradation
Biodegradation, Environmental
bioremediation
Fresh Water - chemistry
Freshwater
hydrogen peroxide
Hydrogen Peroxide - pharmacology
methodology
Minerals - metabolism
Oxidation-Reduction
oxygenation agent
polychlorinated biphenyls
Polychlorinated Biphenyls - metabolism
rivers
sediments
Soil Pollutants - metabolism
Water Pollutants, Chemical - metabolism
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Summary:The ability to initiate aerobic conditions in dechlorinated anaerobic sediments was tested using hydrogen peroxide as an oxygenation agent. Hydrogen peroxide additions to the sediment induced aerobic polychlorinated biphenyl (PCB) degraders as indicated first, by an increase in bacterial count and second by a decline in PCB concentration from 135 micrograms/g to 20 micrograms/g over a 96-day period. Dechlorinated anaerobic sediment seems also to harbor indigenous anaerobic and aerobic microorganisms with high PCB degradation abilities. Those results support the potential of in situ degradation of PCBs using a sequential anaerobic-aerobic technique.
ISSN:0923-9820
1572-9729
DOI:10.1007/BF00695972