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UTILIZATION OF BACTERIA TO REMEDIATE CONTAMINATED SOILS AND SEDIMENTS IN THE US: LASAGNA AND OTHER TREATMENTS
Citation:
DavisHoover*, W J. UTILIZATION OF BACTERIA TO REMEDIATE CONTAMINATED SOILS AND SEDIMENTS IN THE US: LASAGNA AND OTHER TREATMENTS. Presented at Presentation at Oxford Centre for Environmental Biotechnology's Dept of Engineering Science, University of Oxford, Oxford, England, 9/17/2001.
Description:
This is an overview of the work underway at USEPA/ORD/NRMRL's Center Hill Microbiology Laboratory on bioremediation of contaminated soils and sediments. The Laboratory has isolated and naturally selected for various isolates. An isolate that will be reviewed is CHL-004, a Pseudomonas aeruginosa, which sequesters lead intracellulary and forms lead phosphate, a more insoluble form of lead. This decreases the bioavailability of lead significantly. Current work with this isolate on sequestration of arsenic and mercury will be discussed. odd shaped thermophilic methanogens isolated from thermal vents in Hellowstone national park which degrade TCE will be shown and discussions of these perhaps "new"life forms will be given. Other enhancements of biodegradation, such as the use of slow releasing oxygen developed by this lab will be shown. Methods of placement of bacterial isolates and electron acceptors such as LASAGNA (electrokinetics with horizontal fractures), Bionets with Isolite, and fractured enhanced bioventing will be presented. Results indicating LASAGNA and Bionets with Isolite and PM1 inoculation are more effective at bioremediation than natural attenuation in Ohio and Montana sites will be presented. No EPA policy statements will be made.