Author(s)

E.F. Kaasschieter, G.J. Mulder & J.D. van der Werff ten Bosch

Abstract

Spillage of organic compounds into the subsurface environment can result in costly remediation. As a possibly effective remediation technique, the in- jection of air into the groundwater (air sparging) has gained attention. The injected air migrates towards the unsaturated zone, volatising contaminants from the groundwater and delivering oxygen to biota for biodegradation (see The two-phase flow of air and water turns out to be predominantly driven by convection. It is modelled using a fractional flow approach, which yields a h

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