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Activated sludge primary biodegradation of polychlorinated biphenyls


The results of this study demonstrate that commercial PCB mixtures which contain predominantly mono- and dichlorobiphenyls readily undergo primary biodegradation under the experimental conditions employed. The data also illustrates that as the levels of tri-, tetra-, and pentachlorobiphenyls increase, the degradation rates decrease accordingly. This resistance of the more highly chlorinated biphenyls, particularly those containing 5 or more chlorine atoms per molecule, explains in part their detection as residues in weathered biological and environmental samples.

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Tucker, E.S., Saeger, V.W. & Hicks, O. Activated sludge primary biodegradation of polychlorinated biphenyls. Bull. Environ. Contam. Toxicol. 14, 705–713 (1975).

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  • Waste Water
  • Sludge
  • Chlorinate
  • Biodegradation
  • Water Management