Abstract
Identification of bacteria that can utilize a wide range of nitroaromatic compounds will allow development of more effective biological treatment methods in industrial wastewater treatment processes and environmental remediation efforts. A new strain of Rhodococcus opacus capable of mineralizing or transforming nitroaromatic and nitramine compounds of importance was isolated. Specifically, the bacterium were found to utilize 2,4,6-trinitrophenol (TNP) as a sole carbon and nitrogen source and have a yield coefficient of 0.16 g cells-N/g TNP-N. The Edwards model was found to provide the best fit to the data and the estimated inhibited growth parameters μmax , KS , and KI were 0.58 h−1 , 25, and 112 mg/L , respectively. It was found that the TNP-degraders could degrade 2,4-dinitrophenol as the sole carbon and nitrogen source and utilize 1,3,5-trinitrobenzene as the sole nitrogen source. Additionally, the results show that the isolates are able to cometabolize 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-tri...
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