Characterization of the geology, geochemistry, hydrology and microbiology of the in-situ air stripping demonstration site at the Savannah River Site

Eddy, C.A.; Looney, B.B.; Dougherty, J. M.; Hazen, Terry C.; Kaback, D.S.

doi:10.2172/10134746

Cited by 19 publications

(12 citation statements)

References 2 publications

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“…A significant portion of the VOCs at the demonstration site are retained in low-permeability clay zones. A 3-m (104) thick clay zone beginning 9 m (30 ft) from the surface is the shallowest example (Eddy et al 1991). Figure 1.1 shows typical PCE and TCE contamination as a function of depth for a well within the zone to be treated by SPSH (MHV-38; see Section 2.0).…”

Section: Department Of Energy (Doe) and Currently Operated By Westingmentioning

confidence: 99%

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Six-phase soil heating for enhanced removal of contaminants: Volatile organic compounds in non-arid soils integrated demonstration, Savannah River Site

Gauglitz¹,

Bergsman²,

Caley³

1994

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During November 1993, Pacific Northwest Laboratory (PN'L) and Savannah River Site (SRS) personnel completed a field demonstration of six-phase soil heating (SPSH) at the Savannah River Site, Aiken, South Carolina. This demonstration was directed by the U.S. Department of Energy (DOE) Volatile Organic Compounds in Non-Arid Soils Integrated Demonstration (VOCs in Non-Arid Soils ID). Pacific Northwest Laboratory designed the SPSH systems for this demonstration, and Westinghouse Savannah River Company (WSRC) conducted drilling, soil sampling, construction, offgas treatment, and contaminant analyses. The purpose of the project was to demonstrate a soil heating system that uses electricity to cost effectively heat soil and enhance the performance of conventional soil-venting techniques. Soils at the integrated demonstration site are contaminated with perchloroethylene (PCE) and trichloroethylene (TCE); the highest soil contamination occurs in clay-rich zones that are ineffectively treated by conventional soil vapor extraction (SVE) because of the very low permeability of the clay. Specific objectives for the demonstration were to: e demonstrate that SPSH accelerates the removal of TCE and PCE from the SRS clay soils compared with conventional SVE techniques quantify the areal and vertical distribution of heating as a result of SPSH under soil conditions experienced at the SRS provide a functional soil electrode and vent design for SPSH collect sufficient data to project the economic feasibility of commercial application of SPSH technology for soils and contaminants similar to those at the SRS.

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Section: Department Of Energy (Doe) and Currently Operated By Westingmentioning

confidence: 99%

“…Duplicate samples were taken every onethird meter (foot) from 7.6 to 16.8 m (25 to 55 ft); above 7.6 m (W ft), samples were taken every 1.5 m (5 ft). Additional details on sampling and analysis are described elsewhere (Eddy-Dilek et al 1994;Eddy et al 1991;and Eddy-Dilek et al 1993).…”

Section: Mhv3l Mhv34 M H W Hhv37 Mhv38 Mhv39 Mhvm Mhv41mentioning

confidence: 99%

Six-phase soil heating for enhanced removal of contaminants: Volatile organic compounds in non-arid soils integrated demonstration, Savannah River Site

Gauglitz¹,

Bergsman²,

Caley³

1994

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“…See references 10 and 19 for details of the sampling procedures. Chemical analyses of the Area M groundwater samples (Table 1) were carried out as previously described (10,19). An artificial groundwater, polluted with various aromatic and chlorinated aliphatic hydrocarbons, was derived from chemical analyses of artesian water at the K-25 facility, Oak Ridge National Laboratories, Oak Ridge, Tenn.…”

Section: Methodsmentioning

confidence: 99%

Characterization of the methanotrophic bacterial community present in a trichloroethylene-contaminated subsurface groundwater site

Bowman

Jiménez

Rosario

et al. 1993

Appl Environ Microbiol

110

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Groundwater, contaminated with trichloroethylene (TCE) and tetrachloroethylene (PCE), was collected from 13 monitoring wells at Area M on the U.S. Department of Energy Savannah River Site near Aiken, S.C. Filtered groundwater samples were enriched with methane, leading to the isolation of 25 methanotrophic isolates. The phospholipid fatty acid profiles of all the isolates were dominated by 18:1o8c (60 to 80%o), a signature lipid for group II methanotrophs. Subsequent phenotypic testing showed that most of the strains were members of the genus Methylosinus and one isolate was a member of the genus Methylocystis. Most of the methanotroph isolates exhibited soluble methane monooxygenase (sMMO) activity. This was presumptively indicated by the naphthalene oxidation assay and confirmed by hybridization with a gene probe encoding the mmoB gene and by cell extract assays. TCE was degraded at various rates by most of the sMMO-producing isolates, whereas PCE was not degraded. Savannah River Area M and other groundwaters, pristine and polluted, were found to support sMMO activity when supplemented with nutrients and then inoculated with Methylosinus trichosporium OB3b. The maximal sMMO-specific activity obtained in the various groundwaters ranged from 41 to 67% compared with maximal rates obtained in copper-free nitrate mineral salts media. This study partially supports the hypothesis that stimulation of indigenous methanotrophic communities can be efficacious for removal of chlorinated aliphatic hydrocarbons from subsurface sites and that the removal can be mediated by sMMO.

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“…The nitrogen present in the compressed air will serve as a nutrient source for the microbial consortia present in the soils. Field-scale demonstrations of the vacuum-extraction, enhanced-bioventing biodegradation processes have been accomplished for EEcontaminated soils at M Area and are expected to be work favorably at the Central Shops Diesel Storage Facility (Eddy et al, 1991;Looney et ai., 1991).…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Characterization and reclamation assessment for the central shops diesel storage facility at Savannah River Site

Fliermans¹,

Hazen²,

Bledsoe³

1994

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The contamination of subsurface terrestrial environments by organic contaminants is a global phenomenon. The remediation of such environments requires innovative assessment techniques and strategies for successful cleanups. Using innovative approaches, the Central Shops Diesel Storage Facility at the Savannah River Site (SRS) was characterized to determine the extent of subsurface diesel fuel contamination. Effective bioremediation techniques for cleaning up of the contaminant plume were established.

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Characterization of the geology, geochemistry, hydrology and microbiology of the in-situ air stripping demonstration site at the Savannah River Site

Cited by 19 publications

References 2 publications

Six-phase soil heating for enhanced removal of contaminants: Volatile organic compounds in non-arid soils integrated demonstration, Savannah River Site

Six-phase soil heating for enhanced removal of contaminants: Volatile organic compounds in non-arid soils integrated demonstration, Savannah River Site

Characterization of the methanotrophic bacterial community present in a trichloroethylene-contaminated subsurface groundwater site

Characterization and reclamation assessment for the central shops diesel storage facility at Savannah River Site

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