Anaerobic Biodegradation of High Energetics in Digestion Sewage Sludge

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by Sung-Hyun Kwon,
Frank J. Y. Shiu,
Teh Fu Yen,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water:

Abstract: The digested sewage sludge culture is highly effective for denitrification and the subsequent degradation of energetics contained nitrites. Two energetics, ADN (ammonium dinitramide) and HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) were investigated by digestion sewage sludge and three pure species; Phanerochaeie chrysosporiuin, Pseudomonas aeruginosa, and Bacillus subtillis. ADN was effectively degraded having its concentration lowered from 255 mg/L to 3.5 mg/L in 9 days. HMX was also strikingly degraded with its concentration reduced from 112 mg/L to a non-detectable amount in 8 days. High concentration of ADN (3000 mgfL) that gave high concentration of NH (1902 mg/L) which is toxic to microorganisms was not reduced. The facultative bacteria, Bacillus sublillis, degraded HMX of 120 mg/L to that of 4.6 mg/L in 16 days.

Subject Headings: Sludge | Sewage | Anaerobic processes | Microbes | Chemical degradation | Denitrification | Nitrites | Toxicity | Ammonia | North America | New Hampshire | United States

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