Measurement of trichloroethylene diffusion as a function of moisture content in sections of gravity-drained soil columns

K. A. McCarthy, Richard Johnson

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Experiments were conducted on discrete sections of gravity-drained sand columns to determine the relationship between the effective diffusion coefficient of trichloroethylene and moisture content in variably saturated porous media. The columns were gravity drained to closely approximately field conditions and the moisture content within each column ranged from field capacity near the top to saturation near the bottom. Measured effective diffusion coefficients were compared with theoretical coefficients calculated using Millington's expression for tortuosity, modified to incorporate diffusion in both the gas and aqueous phases. Agreement between the measured and theoretical effective diffusion coefficients was good for all moisture contents investigated.

Original languageEnglish (US)
Pages (from-to)49-55
Number of pages7
JournalJournal of Environmental Quality
Volume24
Issue number1
StatePublished - Jan 1995

Fingerprint

Trichloroethylene
trichloroethylene
soil column
moisture content
Gravitation
Moisture
gravity
Soils
tortuosity
field capacity
Porous materials
porous medium
Sand
Gases
saturation
sand
gas
experiment
Experiments

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry

Cite this

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