Design, demonstration and evaluation of a thermal enhanced vapor extraction system
Abstract
The Thermal Enhanced Vapor Extraction System (TEVES), which combines powerline frequency heating (PLF) and radio frequency (RF) heating with vacuum soil vapor extraction, was used to effectively remove volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) from a pit in the chemical waste landfill (CWL) at Sandia National Laboratories (SNL) within a two month heating period. Volume average temperatures of 83{degrees}C and 112{degrees}C were reached for the PLF and RF heating periods, respectively, within the 15 ft x 45 ft x 18.5 ft deep treated volume. This resulted in the removal of 243 lb of measured toxic organic compounds (VOCs and SVOCs), 55 gallons of oil, and 11,000 gallons of water from the site. Reductions of up to 99% in total chromatographic organics (TCO) was achieved in the heated zone. Energy balance calculations for the PLF heating period showed that 36.4% of the heat added went to heating the soil, 38.5% went to evaporating water and organics, 4.2% went to sensible heat in the water, 7.1% went to heating the extracted air, and 6.6% was lost. For the RF heating period went to heating the soil, 23.5% went to evaporating water and organics, 2.4% went to sensible heat inmore »
- Authors:
-
- and others
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
- OSTI Identifier:
- 525056
- Report Number(s):
- SAND-97-1251
ON: DE97008819; TRN: 97:018519
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: Aug 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; ORGANIC COMPOUNDS; EXTRACTION; SOILS; REMEDIAL ACTION; GROUND DISPOSAL; RADIOACTIVE WASTES; HEATING; SANDIA NATIONAL LABORATORIES; REMOVAL; ENERGY BALANCE
Citation Formats
Phelan, J, Reavis, B, and Swanson, J. Design, demonstration and evaluation of a thermal enhanced vapor extraction system. United States: N. p., 1997.
Web. doi:10.2172/525056.
Phelan, J, Reavis, B, & Swanson, J. Design, demonstration and evaluation of a thermal enhanced vapor extraction system. United States. https://doi.org/10.2172/525056
Phelan, J, Reavis, B, and Swanson, J. 1997.
"Design, demonstration and evaluation of a thermal enhanced vapor extraction system". United States. https://doi.org/10.2172/525056. https://www.osti.gov/servlets/purl/525056.
@article{osti_525056,
title = {Design, demonstration and evaluation of a thermal enhanced vapor extraction system},
author = {Phelan, J and Reavis, B and Swanson, J},
abstractNote = {The Thermal Enhanced Vapor Extraction System (TEVES), which combines powerline frequency heating (PLF) and radio frequency (RF) heating with vacuum soil vapor extraction, was used to effectively remove volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) from a pit in the chemical waste landfill (CWL) at Sandia National Laboratories (SNL) within a two month heating period. Volume average temperatures of 83{degrees}C and 112{degrees}C were reached for the PLF and RF heating periods, respectively, within the 15 ft x 45 ft x 18.5 ft deep treated volume. This resulted in the removal of 243 lb of measured toxic organic compounds (VOCs and SVOCs), 55 gallons of oil, and 11,000 gallons of water from the site. Reductions of up to 99% in total chromatographic organics (TCO) was achieved in the heated zone. Energy balance calculations for the PLF heating period showed that 36.4% of the heat added went to heating the soil, 38.5% went to evaporating water and organics, 4.2% went to sensible heat in the water, 7.1% went to heating the extracted air, and 6.6% was lost. For the RF heating period went to heating the soil, 23.5% went to evaporating water and organics, 2.4% went to sensible heat in the water, 7.5% went to heating extracted air, and 9.7% went to losses. Energy balance closure was 92.8% for the PLF heating and 98% for the RF heating. The energy input requirement per unit soil volume heated per unit temperature increase was 1.63 kWH/yd{sup 3}-{degrees}C for PLF heating and 0.73 kWH/yd{sup 3}{degrees}C for RF heating.},
doi = {10.2172/525056},
url = {https://www.osti.gov/biblio/525056},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 1997},
month = {Fri Aug 01 00:00:00 EDT 1997}
}