Vapor stripping of VOC-contaminated clay soils

Conference · Fri Jan 01 04:00:00 EST 1993

OSTI ID:6435018

West, O R; Siegrist, R L; Lucero, A J; Jennings, H L ^[1]; Schmunk, S W ^[2]

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1. Oak Ridge National Lab., TN (United States)
2. Michigan Technological Univ., Houghton, MI (United States)

Vapor stripping is a treatment process in which volatile organic contaminants (VOCs) are removed from contaminated soil by high-pressure aeration. This technology is potentially applicable to low-permeability soils when coupled with in situ soil mixing. A laboratory evaluation of in situ vapor stripping was conducted for TCE-contaminated deposits ([gt]80% silt and clay, and hydraulic conductivity [le]10[sup -6]cm/sec) underlying a land disposal site located at a DOE facility. Intact soil cores taken from contaminated areas and re-packed soil cores spiked with TCE were treated in an apparatus that simulated the vapor stripping process. Removal efficiencies calculated from pre- and posttreatment samples were predominately greater than 85%. In some of the spiked cores, soil samples were taken during treatment to establish removal efficiency as a function of treatment time.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6435018
• Report Number(s): CONF-930769-1; ON: DE93011847
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540250* -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
CHROMATOGRAPHY
CLAYS
DIRECT REACTIONS
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
GAS CHROMATOGRAPHY
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDRAULIC CONDUCTIVITY
LYSIMETERS
MASS SPECTROSCOPY
MATERIALS
MATTER
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
OFF-GAS SYSTEMS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLY
POLYETHYLENES
POLYTETRAFLUOROETHYLENE
SAMPLING
SEPARATION PROCESSES
SOILS
SPECTROSCOPY
STRIPPING
SYNTHETIC MATERIALS
TEFLON
THERMOCOUPLES
TRANSFER REACTIONS
VAPORS
VOLATILE MATTER