Performance of Air Sparging in Treatment of Oxygenates

The treatment performance data for 123 projects show that air sparging (either alone or in combination with other technologies) has been used to reduce MTBE in groundwater from concentrations >1,000,000 to <50 pg/L. The median project duration for the 19 completed sites ranged from 1 to 5 years. Although two of the 123 projects listed TBA as a cocontaminant, neither of these projects reported TBA concentrations before or after treatment; no data for other fuel oxygenates were reported.

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