Biodegradation of 2,4-dinitrotoluene in a two stage system
- Univ. of Cincinnati, OH (United States). Dept. of Civil and Environmental Engineering
- Army Construction Engineering Research Labs., Champaign, IL (United States)
An anaerobic/anoxic fluidized-bed GAC bioreactor in series with an activated sludge reactor was used to treat 2,4-Dinitrotoluene (2,4-DNT). A Simulated high strength wastewater solution of 2,4-DNT, ethanol, and ethyl ether as well as carbonate buffer and nutrient solutions were fed to the anaerobic/anoxic reactor. The environment in the fluidized-bed reactor was varied to determine its effect on 2,4-DNT biodegradation. The effluent from this reactor was treated further in an activated sludge system. Methanogenic operation of the fluidized-bed resulted in stoichiometric transformation of 2,4-DNT to 2,4-diaminotoluene (2,4-DAT). The 2,4-DAT was completely mineralized by the activated sludge. The system failed to transform the 2,4-DNT under anaerobic conditions without addition of a primary substrate. The effects of operating the first stage under nitrate reducing conditions with a primary substrate is currently being investigated.
- OSTI ID:
- 82810
- Report Number(s):
- CONF-940789--; ISBN 0-7844-0031-8
- Country of Publication:
- United States
- Language:
- English
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