Nitrate-based bioremediation of JP-4 jet fuel: Pilot-scale demonstration
Conference
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OSTI ID:490923
- Environmental Protection Agency, Ada, OK (United States). R.S. Kerr Environmental Research Lab.
- Air Force Armstrong Lab., Tyndall AFB, FL (United States)
- Environmental Restoration Program, Eglin AFB, FL (United States)
- EA Engineering, Science and Technology, Shalimar, FL (United States)
Data are presented for the first 4.5 months of operation of a pilot-scale treatment demonstration on nitrate-based bioremediation at Eglin Air Force Base, Florida. Two 30-m x 30-m treatment cells were delineated for treatment, one of which receives recharge amended to yield 10 to 20 mg/L NO{sub 3}-N and the other which receives no amendments. Application is by sprinklers at 11 gpm/cell. Movement of tracers and nitrate were monitored routinely through the use of both fully-penetrating wells and cluster wells. In the centers of both treatment cells, the tracers have penetrated to beneath the lower contaminated regions located 3 m beneath ground surface, 2.1 to 2.4 m below the water table. In the nitrate treatment cell, nitrate has also penetrated to this depth, but concentrations have decreased rapidly relative to the tracer at all depths. Lysimeter data show that about half of the applied nitrate is contacting the contaminated zone. Although total contaminant concentrations have not declined with nitrate addition to date, water quality analyses show some preferential degradation of labile compounds in the nitrate cell. Radiolabel microcosm studies confirm mineralization of toluene and m-xylene under denitrifying conditions. Part of the system has been modified to minimize vegetative uptake of nitrate.
- Sponsoring Organization:
- Environmental Protection Agency, Washington, DC (United States); Department of the Air Force, Washington, DC (United States)
- OSTI ID:
- 490923
- Report Number(s):
- CONF-950483--; ISBN 1-57477-007-1
- Country of Publication:
- United States
- Language:
- English
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