A model for oxygen transport and consumption in the unsaturated zone

J.C. Refsgaard, T.H. Christensen, H.C. Ammentorp

Research output: Contribution to journalArticleResearchpeer-review

23 Citations (Scopus)


An oxygen transport and consumption model has been developed as a submodel to a general numerical model for solute transport in the unsaturated zone. The model comprises diffusive and convective transport of oxygen in soil air, convective transport and oxygen consumption in free water, and diffusive transport and a constant-rate oxygen consumption in the water-saturated soil crumbs. The model also estimates the anaerobic fraction of the water-saturated crumbs where no oxygen consumption takes place. The model dynamics and applicability are illustrated using the examples of the operation of a waste water infiltration plant and of anaerobic zones in the soil of importance for modelling denitrification.

Original languageEnglish
Pages (from-to)349-369
Number of pages21
JournalJournal of Hydrology
Issue number1-4
Publication statusPublished - Dec 1991
Externally publishedYes

Programme Area

  • Programme Area 2: Water Resources


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