Non-ideal behavior during complete dissolution of organic immiscible liquid: 2. Ideal porous media

M. K. Mahal, Asami Murao, Gwynn R. Johnson, Ann E. Russo, Mark L. Brusseau

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Column experiments were conducted using ideal natural sands and stainless-steel beads to examine the complete dissolution behavior of an organic immiscible liquid. Trichloroethene was used as the representative organic liquid. The elution curves exhibited multi-step behavior, with multiple extended periods of relatively constant contaminant flux. These secondary steady-state stages occurred at concentrations several orders-of-magnitude below aqueous solubility for the well-sorted sands. In contrast, the secondary steady-state stages occurred within 1 log of aqueous solubility for the poorly sorted sand. The non-ideal behavior is hypothesized to result from constraints to hydraulic accessibility of the organic liquid to flowing water, which may be expected to be mediated by the pore-scale configuration of the flow field and the fluid phases.

Original languageEnglish (US)
Pages (from-to)191-197
Number of pages7
JournalWater, Air, and Soil Pollution
Volume213
Issue number1-4
DOIs
StatePublished - Nov 2010

Keywords

  • Elution curves
  • Mass transfer
  • NAPL
  • Transport

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Ecological Modeling
  • Water Science and Technology
  • Pollution

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