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By Jim C. Spain, Joseph B. Hughes, Hans-Joachim Knackmuss

Choked with sensible purposes and study, Biodegradation of Nitroaromatic Compounds and Explosives offers a global viewpoint on environmental infection from explosives. It covers biodegradation techniques for DNT and a wide selection of alternative nitroaromatic compounds of environmental value and makes the data available to working towards environmental and chemical engineers. Biodegradation of Nitroaromatic Compounds and Explosives promises a synthesis of ongoing examine and an appreciation of the notable diversity of biochemical ideas to be had for the transformation of nitroaromatic compounds. It presents a practical evaluation of the present and capability box purposes of some of the recommendations.

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Extra resources for Biodegradation of nitroaromatic compounds and explosives

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The precise scale of each reactor will depend on the typical ratios of the DNT isomers. However, the results of this and other studies149 indicated that 2,6-DNT degradation is intrinsically slower than 2,4-DNT degradation and would therefore require a larger reactor to accommodate the difference between the rates at which the two isomers can be degraded. Bench-scale and subsequent pilot-scale experiments revealed that inoculation with specific DNT-degrading bacteria will greatly hasten the development of a stable DNT-degrading population even in the presence of an indigenous population.

9B). meta-Cleavage of catechol yields 2-hydroxymuconic semialdehyde, which is oxidized to 2-hydroxymuconic acid or hydrolyzed to 2-oxo-4-pentanoic acid. 147 The postulated product of the reaction, nitrobenzenedihydrodiol, would spontaneously rearomatize to catechol with the release of nitrite. Preliminary studies indicate that the initial dioxygenase is closely related to the nitrotoluene dioxygenases and more distantly related to the naphthalene dioxygenases. The genes that encode NB dioxygenase have recently been cloned, and efforts © 2000 by CRC Press LLC L1522-frame-C02 Page 39 Thursday, May 18, 2000 12:58 PM to understand the molecular biology of the unusual dioxygenase are just beginning (see Chapter 3).

4). Cometabolic reduction and acetylation of 2,4-DNT has recently been demonstrated under aerobic conditions as well as anaerobic conditions in P. 150 In general, nonspecific reduction does not lead to ring cleavage and further transformation of the metabolites. 2 Practical Applications for Degradation of DNT DNT is a major ingredient in single-base gun propellants, generally constituting about 10% of the total components. Currently, Radford Army Ammunition Plant is a major production site, and Badger Army Ammunition Plant near Baraboo, WI was formerly the major reprocessing site that handled the single-base gun propellant formulations.

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