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Title: Change in gasoline constituent mass transfer during soil venting

Abstract

The mass transfer of gasoline constituents [benzene, toluene, ethylbenzene, xylenes (BTEX), and naphthalene] to air during laboratory-simulated soil vapor extraction (referred to here as soil venting) was determined. Soil venting was conducted on laboratory-packed columns brought to residual water then residual gasoline saturations. The columns contained either a sandy, low organic soil, a sandy organic soil, or glass beads. Gasoline-air partitioning at the start of soil venting was experimentally determined to be adequately described by Raoult's law for many gasoline constituents of interest. The application of the local equilibrium assumption used to describe the mass transfer of gasoline constituents from the residual gasoline to air during soil venting was investigated using: (1) experimental techniques such as reduction of air flow rate; flow-interruption and discrete sampling of soil following soil venting; and (2) a local-equilibrium-base model employing Raoult's law to describe gasoline-air partitioning. The local equilibrium assumption was shown to be valid for describing the mass transfer of various gasoline constituents until such time when the constituent was nearly depleted from the non-aqueous-phase liquid gasoline (NAPL). Mass transfer of constituents became rate-limiting when the constituent was depleted from the residual gasoline. The effect of soil organic matter content was only slightlymore » apparent at this time, as evidenced by the higher benzene and toluene air concentration in the effluent of columns containing the sandy organic soil.« less

Authors:
 [1]; ;  [2];  [3]
  1. Univ. of Vermont, Burlington, VT (United States). Dept. of Civil and Environmental Engineering
  2. Michigan State Univ., East Lansing, MI (United States). Dept. of Civil and Environmental Engineering
  3. Univ. of Florida, Gainesville, FL (United States). Dept. of Environmental Engineering Science
OSTI Identifier:
7054837
Resource Type:
Journal Article
Journal Name:
Journal of Environmental Engineering (New York); (United States)
Additional Journal Information:
Journal Volume: 120:6; Journal ID: ISSN 0733-9372
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; BENZENE; MASS TRANSFER; GASOLINE; REMOVAL; NAPHTHALENE; SOILS; DECONTAMINATION; TOLUENE; XYLENES; OIL SPILLS; REMEDIAL ACTION; SIMULATION; ALKYLATED AROMATICS; AROMATICS; CLEANING; CONDENSED AROMATICS; FUELS; HYDROCARBONS; LIQUID FUELS; ORGANIC COMPOUNDS; PETROLEUM PRODUCTS; 020900* - Petroleum- Environmental Aspects

Citation Formats

Hayden, N J, Voice, T C, Wallace, R B, and Annable, M D. Change in gasoline constituent mass transfer during soil venting. United States: N. p., Web. doi:10.1061/(ASCE)0733-9372(1994)120:6(1598).
Hayden, N J, Voice, T C, Wallace, R B, & Annable, M D. Change in gasoline constituent mass transfer during soil venting. United States. https://doi.org/10.1061/(ASCE)0733-9372(1994)120:6(1598)
Hayden, N J, Voice, T C, Wallace, R B, and Annable, M D. . "Change in gasoline constituent mass transfer during soil venting". United States. https://doi.org/10.1061/(ASCE)0733-9372(1994)120:6(1598).
@article{osti_7054837,
title = {Change in gasoline constituent mass transfer during soil venting},
author = {Hayden, N J and Voice, T C and Wallace, R B and Annable, M D},
abstractNote = {The mass transfer of gasoline constituents [benzene, toluene, ethylbenzene, xylenes (BTEX), and naphthalene] to air during laboratory-simulated soil vapor extraction (referred to here as soil venting) was determined. Soil venting was conducted on laboratory-packed columns brought to residual water then residual gasoline saturations. The columns contained either a sandy, low organic soil, a sandy organic soil, or glass beads. Gasoline-air partitioning at the start of soil venting was experimentally determined to be adequately described by Raoult's law for many gasoline constituents of interest. The application of the local equilibrium assumption used to describe the mass transfer of gasoline constituents from the residual gasoline to air during soil venting was investigated using: (1) experimental techniques such as reduction of air flow rate; flow-interruption and discrete sampling of soil following soil venting; and (2) a local-equilibrium-base model employing Raoult's law to describe gasoline-air partitioning. The local equilibrium assumption was shown to be valid for describing the mass transfer of various gasoline constituents until such time when the constituent was nearly depleted from the non-aqueous-phase liquid gasoline (NAPL). Mass transfer of constituents became rate-limiting when the constituent was depleted from the residual gasoline. The effect of soil organic matter content was only slightly apparent at this time, as evidenced by the higher benzene and toluene air concentration in the effluent of columns containing the sandy organic soil.},
doi = {10.1061/(ASCE)0733-9372(1994)120:6(1598)},
url = {https://www.osti.gov/biblio/7054837}, journal = {Journal of Environmental Engineering (New York); (United States)},
issn = {0733-9372},
number = ,
volume = 120:6,
place = {United States},
year = {},
month = {}
}