Surfactant-aided recovery/in situ bioremediation for oil-contaminated sites
- Inst. Francais du Petrole, Rueil Malmaison (France)
- IFARE, Strasbourg-Cronenbourg (France)
- GRS, Paris (France)
Bioremediation has been the most commonly used method way for in situ cleaning of soils contaminated with low-volatility petroleum products such as diesel oil. However, whatever the process (bioventing, bioleaching, etc.), it is a time-consuming technique that may be efficiency limited by both accessibility and too high concentrations of contaminants. A currently developed process aims at quickly recovering part of the residual oil in the vadose and capillary zones by surfactant flushing, then activating in situ biodegradation of the remaining oil in the presence of the same or other surfactants. The process has been tested in laboratory columns and in an experimental pool, located at the Institut Franco-Allemand de Recherche sur l`Environnement (IFARE) in Strasbourg, France. Laboratory column studies were carried out to fit physico-chemical and hydraulic parameters of the process to the field conditions. The possibility of recovering more than 80% of the oil in the flushing step was shown. For the biodegradation step, forced aeration as a mode of oxygen supply, coupled with nutrient injection aided by surfactants, was tested.
- OSTI ID:
- 490956
- Report Number(s):
- CONF-950483-; ISBN 1-57477-007-1; TRN: 97:011813
- Resource Relation:
- Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Applied bioremediation of petroleum hydrocarbons; Hinchee, R.E.; Kittel, J.A. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Reisinger, H.J. [ed.] [Integrated Science and Technology, Inc., Marietta, GA (United States)]; PB: 547 p.; Bioremediation, Volume 3(6)
- Country of Publication:
- United States
- Language:
- English
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