Stimulation of microbial dechlorination of polychlorinated...

C - Chemistry – Metallurgy – 12 – N

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C12N 1/38 (2006.01) C12S 99/00 (2010.01) B09B 3/00 (2006.01) B09C 1/10 (2006.01) C02F 3/34 (2006.01) C12P 7/22 (2006.01)

Patent

CA 2514129

Disclosed is a method for the anaerobic microbial dechlorination of polychlorinated biphenyls (PCBs). Polyhalogenated ethenes are used to stimulate the growth and dechlorinating activity of PCB dechlorinating bacteria in a contaminated soil or sediment. This method may be further coupled with aerobic microbial degradation of PCBs for the complete destruction of PCBs in soils and sediments. Polyhalogenated ethenes are also used in growth media for the culturing of PCB dechlorinating bacteria.

L'invention concerne un procédé de déchloration microbienne anaérobie de polychlorobiphényles (PCB). Des éthènes polyhalogénés sont utilisés pour stimuler la croissance et l'action déchlorante de bactéries déchlorant les PCB dans un sol ou un sédiment contaminé. Le procédé selon l'invention peut être combiné à une dégradation microbienne aérobie des PCB de façon à obtenir une destruction totale des PCB dans les sols et les sédiments. Des éthènes polyhalogénés sont également utilisés en milieux de croissance pour faire croître des bactéries déchlorant les PCB.

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