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A 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (DDT)-degrading bacterium was isolated from soil samples that had been enriched with DDT over a prolonged period of time; these samples were collected from the sewer sludge of a pesticide factory and from DDT-contaminated fields. This consortium was acclimated by repeated passage through a mineral salt medium containing increasing concentrations of DDT...
The degradation dynamics of phenanthrene in soil was studied. The half-life of phenanthrene in the non-sterilized contaminated soil was only 5.1 d, much shorter than the same in the sterilized soil. The dominant strain of phenanthrene microbial degradation was isolated and identified by 16S rDNA as Alcaligenes sp.; its growth and degradative capability were highest at 25°C and pH of 7.0. Inoculation...
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