Enhanced soil vapor extraction with radio frequency heating
- Univ. of Texas, Austin, TX (United States)
- Univ. of Illinois, Urbana, IL (United States)
A field demonstration of enhanced soil vapor extraction using radio frequency (RF) heating to remove semi-volatiles from the subsurface is nearing completion. The site, a fire training area consisting of a well-graded sand with silt, had initial petroleum hydrocarbon concentrations up to 22,000 mg/kg. The treatment volume contained approximately 80 kg of diesel range organics (DRO, C-12 to C-20). Vapors are extracted from a central well while RF energy is supplied by two applicators positioned in vertical wells on either side of the extraction well. Temperatures in the center of the treatment zone have reached 140{degrees}C and at the treatment perimeter (2m radius) have reached 100{degrees}C to 120{degrees}C. Analyses of the condensed offgas show the chromatogram matches that for DRO with constituents up to C-20. Preliminary mass balance indicates that more than 65 kg of DRO have been removed from the site. The first 77 days of RF heating operation are reported in this paper. The project is continuing and final results will be reported at a later time.
- OSTI ID:
- 567849
- Report Number(s):
- CONF-971032-; TRN: 98:000358-0042
- Resource Relation:
- Conference: In situ remediation of the geoenvironment conference, Minneapolis, MN (United States), 5-7 Oct 1997; Other Information: PBD: 1997; Related Information: Is Part Of In situ remediation of the geoenvironment; Evans, J.C. [ed.]; PB: 622 p.
- Country of Publication:
- United States
- Language:
- English
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