Microbial dehalogenation of polychlorinated biphenyls in aerobic conditions

From soils contaminated with polychlorinated biphenils (PCBs) a strain of Alcaligenes sp. able to grow in a mineral medium with a commercial mixture of PCBs as carbon source was isolated. This strain consumed up to 200 ppm in seven days in laboratory conditions. After 24 h of incubation, some new co...

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Detalles Bibliográficos
Autores principales: Aráoz, B., Viale, A.A.
Formato: JOUR
Materias:
Alcaligenes sp.
PCBs biodegradation
PCBs dechlorination
polychlorinated biphenyl
xenobiotic agent
aerobic metabolism
Alcaligenes
article
bacterium transformation
bioreactor
bioremediation
dechlorination
dehalogenation
drug mixture
laboratory diagnosis
mass spectrometry
microbial activity
nonhuman
soil pollution
strain difference
strain identification
Biodegradation, Environmental
Bioreactors
Chlorine
Molecular Structure
Polychlorinated Biphenyls
Soil Microbiology
Soil Pollutants
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03257541_v36_n1_p47_Araoz
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:From soils contaminated with polychlorinated biphenils (PCBs) a strain of Alcaligenes sp. able to grow in a mineral medium with a commercial mixture of PCBs as carbon source was isolated. This strain consumed up to 200 ppm in seven days in laboratory conditions. After 24 h of incubation, some new congeners of PCBs could be recognized by mass spectrometry. Through the identification of these compounds it was possible to postulate examples of possible transformations by dechlorinations of penta- and tetra-chlorinated congeners into tri-chlorinated ones. The properties of the isolated strain are appropriate for bioremediation of contaminated areas and also for using in bioreactors in order to remove the xenobiotic chemical.

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