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- Title
Kinetics of biodegradation of mixtures of polycyclic aromatic hydrocarbons.
- Authors
Lotfabad, S K; Gray, M R
- Abstract
The kinetics of biodegradation of polycyclic aromatic hydrocarbons (PAHs) by a mixed culture were determined in a creosote-contaminated soil and in a pristine soil. A competitive-inhibition model was able to represent the kinetics of degradation of PAHs from the creosote-contaminated soil, from the lag phase through to active degradation, but not data from pristine soil with the same PAHs alone and in mixtures. The presence of phenanthrene introduced a lag phase of 4.5 days in the degradation of fluoranthene and 5 days for chrysene. Rapid degradation of pyrene followed a lag phase of circa 5 days, regardless of the presence of other PAHs. These results show that even when kinetics of PAH degradation by mixed cultures appear to follow competitive-inhibition kinetics, the underlying mechanisms may be more complex.
- Publication
Applied microbiology and biotechnology, 2002, Vol 60, Issue 3, p361
- ISSN
0175-7598
- Publication type
Journal Article
- DOI
10.1007/s00253-002-1104-7