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Title: AEROBIC BIODEGRADATION OF PETROLEUM-CONTAMINATED SOIL: SIMULATIONS FROM SOIL MICROCOSMS
Accession Number: 00731136
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: The capacity of natural bacteria to aerobically degrade hydrocarbon vapors was measured and modeled to assess the potential of bioventing to reduce exhaust vapor treatment requirements at a petroleum spill site. Five sets of aerobic soil microcosms from the vadose zone of a Massachusetts Highway Department contaminated right-of-way were dosed with different initial petroleum vapor standard concentrations, then monitored by gas chromatographic analysis over a 55-day period. The five sets yielded an average maximum reaction rate of 20 micrograms/cubic meter (soil gas)-sec, which compared favorably with studies of light hydrocarbon vapor degradation in sandy soils from other sites. The calibrated rate was incorporated into a steady-state bioventing model that simulated the evaporation of 34,000 L of petroleum over a 170-year natural release period and an 8-year accelerated release period for 10-day residence time. Aerobic degradation for a 10-day residence time reduced exhaust vapor concentrations by over 100% for natural release rates, with a 13% reduction under accelerated conditions.
Supplemental Notes: This paper appears in Transportation Research Record No. 1546, Issues in Geotechnical Engineering Research.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Ostendorf, D WLong, S CSchoenberg II, T HPollock, S JPagination: p. 121-130
Publication Date: 1996
Serial: ISBN: 0309059518
Features: Figures
(5)
; References
(29)
; Tables
(3)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; I42: Soil Mechanics
Files: TRIS, TRB
Created Date: Feb 3 1997 12:00AM
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