Degradation of ammonium dinitramide (ADN) in digested sewage sludge under strict anaerobic conditions |
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Authors: | Sung‐Hyun Kwon |
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Affiliation: | 1. R &2. D Center for Environment, Safety &3. Health , LG Corp. Institute of Technology , 134 Shinchon‐Dong, Seodaemoon‐Gu, Seoul, 120–749, Korea |
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Abstract: | The biodegradation of one popular nitramine energetics, ammonium dinitramide (ADN) by mixture of denitrifying bacterial species was investigated. ADN was observed to be effectively mineralized in the anaerobic mixed culture. The initial ADN concentration of 250 mg/L was reduced to non‐detectable levels (> 99% removal efficiency) in 5 days of incubation under anaerobic conditions. Final products generated from anaerobic degradation of nitramine energetics by anaerobic metabolism were NH4 +, CH4, and CO2 that were released to the environment with the denitrifiers’ growth. In addition, it was found that the activity of denitrifiers was inhibited by high concentration of ammonia generated through the degradation reactions of energetic nitrites. |
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Keywords: | Nitramide energetics ADN biodegradation sewage sludge |
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