A laboratory assessment of air sparging performance on oil-contaminated soil
- GE Corporate R and D Center, Schenectady, NY (United States)
- General Electric Environmental and Facility Programs, Pittsfield, MA (United States)
The efficacy of air sparging to remediate a subsurface plume of transformer oil is evaluated in a comprehensive laboratory study. Shake flask assays containing contaminated soil indicated the oil was highly (>80%) biodegradable by indigenous bacteria when oxygen, nitrogen, and phosphorous were supplied. From 50 to 60% of the oil was removed from the soil in a 169-day biodegradation rate study performed in laboratory soil columns designed to mimic air sparged conditions. Maximal total petroleum hydrocarbon (TPH) biodegradation rates of {approximately}70 mg/kg per day were observed in nutrient (N and P) amended columns at 23 C, based upon O{sub 2} uptake and CO{sub 2} production. The total TPH biodegraded in these columns was 3-fold higher than in an unamended control column.
- OSTI ID:
- 467734
- Report Number(s):
- CONF-950483--; ISBN 1-57477-003-9
- Country of Publication:
- United States
- Language:
- English
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