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AEROBIC BIODEGRADATION OF PETROLEUM-CONTAMINATED SOIL: SIMULATIONS FROM SOIL MICROCOSMS.
| 题名： | AEROBIC BIODEGRADATION OF PETROLEUM-CONTAMINATED SOIL: SIMULATIONS FROM SOIL MICROCOSMS. |
| 作者： | Ostendorf-DW; Long-SC; Schoenberg-TH-II; Pollock-SJ |
| 关键词： | BACTERIA-; BIODEGRADATION-; PETROLEUM-; CONTAMINATED-SOILS; SOIL-MICROCOSMS; RIGHT-OF-WAY-REAL-ESTATE; MONITORING-; GAS-CHROMATOGRAPHY; SIMULATION-MODELS; REACTION-RATE; SPILLAGE-; BIOVENTING-; HYDROCARBON-VAPORS |
| 摘要： | 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. |
| 总页数： | Transportation Research Record. 1996. (1546) pp121-130 (5 Fig., 3 Tab., 29 Ref.) |
| 报告类型： | 科技报告 |
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