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Effect of Hydrologic and Geochemical Conditions on Oxygen-Enhanced Bioremediation in a Gasoline-Contaminated Aquifer

Bioremediation Journal

By:
and
DOI: 10.1080/713607983

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Abstract

The effect of pre-existing factors, e.g., hydrologic, geochemical, and microbiological properties, on the results of oxygen addition to a reformulated gasoline-contaminated groundwater system was studied. Oxygen addition with an oxygen-release compound (a proprietary form of magnesium peroxide produced different results with respect to dissolved oxygen (DO) generation and contaminant decrease in the two locations. Oxygen-release compound injected at the former UST source area did not significantly change measured concentrations of DO, benzene, toluene, or MTBE. Conversely, oxygen-release compound injected 200 m downgradient of the former UST source area rapidly increased DO levels, and benzene, toluene, and MTBE concentrations decreased substantially. The different results could be related to differences in hydrologic and geochemical conditions that characterized the two locations prior to oxygen addition. The lack of recharge to ground water in the paved UST source area led to a much larger geochemical sink for DO compared to ground water in the unpaved area.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Effect of Hydrologic and Geochemical Conditions on Oxygen-Enhanced Bioremediation in a Gasoline-Contaminated Aquifer
Series title:
Bioremediation Journal
DOI:
10.1080/713607983
Volume
7
Issue:
3-4
Year Published:
2003
Language:
English
Publisher:
Taylor and Francis
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Bioremediation Journal
First page:
165
Last page:
177
Number of Pages:
13