Author(s): Christoph Betz; Arne Farber; Reinhard Schmidt
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Abstract: Steam injection enhances evaporation by increasing the vapor pressures of NAPL's by orders of magnitude. By combining steam injection and vapor extraction in the unsaturated zone contaminated soils can be remediated in relatively short times. The main physical and thermodynamic processes of heat transfer and contaminant behaviour were studied in homogeneous sand filled lab scale column experiments. Technical scale experiments were conducted in a 6m x 6m x 4.5m sand filled container of the VEGAS-facility in Stuttgart.
Year: 1997