Bioremediation of TNT-contaminated soil by the TERRANOX{reg_sign} system
- Umweltschutz Nord GmbH and Co., Ganderkesee (Germany)
- Fraunhofer Inst. fuer Grenzflaechen und Bioverfahrenstechnik, Stuttgurt (Germany)
- Univ. of Stuttgart (Germany)
A method for biological on-site treatment of 2,4,6-trinitrotoluene (TNT)-contaminated soil is presented. Laboratory and large-scale pilot experiments provide new data on how TNT and its bacterial metabolites (such as aminoaromatic chemicals) can be detoxified. The pilot project is performed in a controlled biological anaerobic/aerobic treatment process using a bioreactor called TERRANOX{reg_sign}. Experiences with TNT-contaminated soil from several former TNT production sites in Germany are based on extensive laboratory-scale experiments indicating that TNT disappears completely under strictly anaerobic conditions. A stable polymeric substances that is not able to leak out of the soil anymore is generated in the second step of the process from 2,4,6-triaminotoluene (TAT) by aerobic treatment. The careful analysis of this immobilization process, long-term behavior of the product, and ecotoxicological data are currently being investigated.
- Sponsoring Organization:
- Bundesministerium fuer Forschung und Technologie, Bonn (Germany)
- OSTI ID:
- 479368
- Report Number(s):
- CONF-950483--; ISBN 1-57477-010-1
- Country of Publication:
- United States
- Language:
- English
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