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Biological Treatment of TNT-Contaminated Soil by a Two-Stage Anaerobic/Aerobic Process

 
: Daun, G.; Lenke, H.; Desiere, F.; Stolpmann, H.; Warrelmann, J.; Reuss, M.; Knackmuss, H.-J.

Brink, W.J.v.d.; Bosman, R.; Arendt, F.:
Contaminated Soil '95
Dordrecht: Kluwer Academic Publishers Group, 1995
pp.337-346
English
Book Article
Fraunhofer IGB ()
anaerobic; behaviour; Biological treatment; explosives; immobilization; leaching; metabolites; reduction; sorption; toxicity tests

Abstract
TNT is found as a major soil contaminant at the sites of armanent plants from World War I and II. While no complete biological mineralization of TNT has yet been found, many bacteria can co-metabolically reduce the nitro groups of TNT to amino groups during anaerobic fermentation of readily available substrates. In a soil slurry, the final reduction product (TAT) irreversibly reacts with soil components. The biological treatment of TNT-contaminated soil with complete reduction of TNT to TAT and immobilization of TAT is a potential remediation process that is currently being tested at a technical scale. The large-scale experiment is accompanied by investigations on the immobilization of TAT and the toxicity of the treated soil.

: http://publica.fraunhofer.de/documents/PX-6715.html