Article | The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference | Microbiological degradation of explosives in bioreactor

Title:
Microbiological degradation of explosives in bioreactor
Author:
M. Odlare: Department of Public Technology, Mälardalen University, Sweden E. Nehrenheim: Department of Public Technology, Mälardalen University, Sweden
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Year:
2006
Conference:
The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference
Issue:
018
Article no.:
004
No. of pages:
1
Publication type:
Abstract
Published:
2007-03-13
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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The production; testing; use and disposal of explosives have extensively contaminated the soil and water at a large number of sites. Several laboratory and field studies have indicated that explosives are toxic to a number of organisms; including humans; in relatively low amounts. There is an urgent need for simple; cheap and effective techniques which can degrade explosive compounds in soil and sludge in an ecologically sound manner. In the present study; a two-step microbiological method was developed where explosive compounds were degraded under shifting anaerobic and aerobic conditions. The method was optimized in a small-scale bioreactor where TNT was mixed with soil; water and substrate and subjected to continuous stirring. For the first 8 days; anaerobic conditions were applied to the bioreactor and for the remaining 12 days; aerobic conditions were applied. Preliminary results show that 75% of the TNT was degraded after four days. The conclusion from the study is that TNT is effectively degraded by the bioreactor technique; and the efficiency can probably be even more improved by certain modification measures.

The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference

Author:
M. Odlare, E. Nehrenheim
Title:
Microbiological degradation of explosives in bioreactor
References:
No references available

The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference

Author:
M. Odlare, E. Nehrenheim
Title:
Microbiological degradation of explosives in bioreactor
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