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RECORD NUMBER: 2 OF 4

OLS Field Name OLS Field Data
Main Title Laboratory and Field Results Linking High Bulk Conductivities to the Microbial Degradation of Petroleum Hydrocarbons.
Author Werkema, D. D. ; Atekwana, E. A. ; Duris, J. ; Rossbach, S. ; Smart, L. ;
CORP Author Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab. ;Missouri Univ.-Rolla. ;Western Michigan Univ., Kalamazoo.
Publisher 2004
Year Published 2004
Stock Number PB2004-104384
Additional Subjects Hydrocarbons ; Petroleum products ; Microbes ; Conductivity ; Sediments ; Contamination ; Geophysics ; Degradation ; Electrodes ; Water treatment ; Biodegradation ; Columns(Process engineering) ; Liquid phases ; Diesel fuels ; Calibration ; Laboratory tests ;
Holdings
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Status
NTIS  PB2004-104384 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/31/2004
Collation CD-ROM
Abstract
The results of a field and laboratory investigation of unconsolidated sediments contaminated by petroleum hydrocarbons and undergoing natural biodegradation are presented. Fundamental to geophysical investigations of hydrocarbon impacted sediments is the assessment of how microbial degradational processes affect their geoelectrical response. Therefore, the primary goal of this study was to understand how microbially mediated processes in hydrocarbon impacted sediments influence the geoelectrical response of this impacted zone. The field and laboratory results showed higher bulk conductivity in sediments impacted by petroleum hydrocarbons. The impacted sediments also showed increased populations of alkane degrading microbes and elevated dissolved cations. The elevated cations in the contaminated sediments relative to uncontaminated sediments suggest enhanced mineral dissolution related to the microbial degradation of the hydrocarbon. Both the laboratory and field data showed the highest bulk conductivities occurring within zones impacted with the free-phase and residual phase hydrocarbon and not within the water saturated zone.