Contaminant mass transfer during gas-phase transport in unsaturated porous media

Jarmila Popovičová, Mark L Brusseau

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

This study was conducted to investigate the relative effects of physical heterogeneity, gas-liquid mass transfer, and rate-limited sorption on the gas-phase transport of contaminants in idealized unsaturated homogeneous and heterogeneous porous media. The transport of methane in the unsaturated homogeneous porous medium was ideal, whereas that of trichloroethene and benzene was nonideal, governed by ratelimited diffusive mass transfer in immobile water and by rate-limited sorption/desorption. Transport of both methane and trichloroethene through the unsaturated heterogeneous porous medium was nonideal. Gas-phase mass transfer between unsaturated advective and nonadvective domains caused nonideal transport of methane. Trichloroethene nonideality was due to a combination of gas-phase mass transfer between advective and nonadvective domains, diffusion within immobile water, and rate-limited sorption/desorption. The transport of trichloroethene through the heterogeneous porous medium was predicted by use of a multiprocess mass transfer model, wherein all parameters were estimated independently.

Original languageEnglish (US)
Pages (from-to)83-92
Number of pages10
JournalWater Resources Research
Volume34
Issue number1
StatePublished - Jan 1998

Fingerprint

porous media
Trichloroethylene
mass transfer
Porous materials
porous medium
trichloroethylene
Mass transfer
Gases
gases
Impurities
Methane
pollutant
methane
sorption
Sorption
gas
desorption
Desorption
Water
benzene

ASJC Scopus subject areas

  • Aquatic Science
  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology

Cite this

Contaminant mass transfer during gas-phase transport in unsaturated porous media. / Popovičová, Jarmila; Brusseau, Mark L.

In: Water Resources Research, Vol. 34, No. 1, 01.1998, p. 83-92.

Research output: Contribution to journalArticle

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