Application of light reflection visualization for measuring organic-liquid saturation for two-phase systems in two-dimensional flow cells

Erica L. Difilippo, Mark L Brusseau

Research output: Contribution to journalArticle

4 Scopus citations


A simple, noninvasive imaging technique was used to obtain in situ measurements of organic-liquid saturation in a two-phase system under dynamic conditions. Efficacy of the light reflection visualization (LRV) imaging method was tested through comparison of measured and known volumes of organic liquid for experiments conducted with a two-dimensional flow cell. Two sets of experiments were conducted, with source-zone configurations representing two archetypical residual-and-pool architectures. LRV measurements were collected during the injection of organic liquid and during a dissolution phase induced by water flushing. There was a strong correlation between measured and known organic-liquid volumes, with the LRV-measured values generally somewhat lower than the known volumes. Errors were greater for the system wherein organic liquid was present in multiple zones comprised of porous media of different permeabilities, and for conditions of multiphase flow. This method proved effective at determining organic-liquid distribution in a two-phase system using minimal specialized equipment.

Original languageEnglish (US)
Pages (from-to)803-809
Number of pages7
JournalEnvironmental Engineering Science
Issue number11
Publication statusPublished - Nov 1 2011



  • imaging
  • NAPL
  • saturation

ASJC Scopus subject areas

  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry

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