Spatial Distribution of PCB Dechlorinating Bacteria and Activities in Contaminated Soil
Joint Authors
Paul, Piuly
Ghosh, Upal
Sowers, Kevin R.
May, Harold D.
Kjellerup, Birthe V.
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-06-21
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Earth Science , Water and Environment
Abstract EN
Soil samples contaminated with Aroclor 1260 were analyzed for microbial PCB dechlorination potential, which is the rate-limiting step for complete PCB degradation.
The average chlorines per biphenyl varied throughout the site suggesting that different rates of in situ dechlorination had occurred over time.
Analysis of PCB transforming (aerobic and anaerobic) microbial communities and dechlorinating potential revealed spatial heterogeneity of both putative PCB transforming phylotypes and dechlorination activity.
Some soil samples inhibited PCB dechlorination in active sediment from Baltimore Harbor indicating that metal or organic cocontaminants might cause the observed heterogeneity of in situ dechlorination.
Bioaugmentation of soil samples contaminated with PCBs ranging from 4.6 to 265 ppm with a pure culture of the PCB dechlorinating bacterium Dehalobium chlorocoercia DF-1 also yielded heterologous results with significant dechlorination of weathered PCBs observed in one location.
The detection of indigenous PCB dehalorespiring activity combined with the detection of putative dechlorinating bacteria and biphenyl dioxygenase genes in the soil aggregates suggests that the potential exists for complete mineralization of PCBs in soils.
However, in contrast to sediments, the heterologous distribution of microorganisms, PCBs, and inhibitory cocontaminants is a significant challenge for the development of in situ microbial treatment of PCB impacted soils.
American Psychological Association (APA)
Kjellerup, Birthe V.& Paul, Piuly& Ghosh, Upal& May, Harold D.& Sowers, Kevin R.. 2012. Spatial Distribution of PCB Dechlorinating Bacteria and Activities in Contaminated Soil. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-482822
Modern Language Association (MLA)
Kjellerup, Birthe V.…[et al.]. Spatial Distribution of PCB Dechlorinating Bacteria and Activities in Contaminated Soil. Applied and Environmental Soil Science No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-482822
American Medical Association (AMA)
Kjellerup, Birthe V.& Paul, Piuly& Ghosh, Upal& May, Harold D.& Sowers, Kevin R.. Spatial Distribution of PCB Dechlorinating Bacteria and Activities in Contaminated Soil. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-482822
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-482822