Reduction of Nitrous Oxide Emission from Pig Composting by Addition of Nitrite-Oxidizing Bacteria

Reduction of nitrous oxide (N sub(2)O) emission from pig manure composting by addition of nitrite (NO sub(2) super(-))-oxidizing bacteria was studied. The composting material was turned 12 times at intervals of 1 or 2 weeks during the 16-week experimental period. The first increase in nitrifying mic...

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Bibliographic Details
Published in:Environmental science & technology 2006-11, Vol.40 (21), p.6787-6787
Main Authors: Fukumoto, Yasuyuki, Suzuki, Kazuyoshi, Osada, Takashi, Kuroda, Kazutaka, Hanajima, Dai, Yasuda, Tomoko, Haga, Kiyonori
Format: Article
Language:English
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Summary:Reduction of nitrous oxide (N sub(2)O) emission from pig manure composting by addition of nitrite (NO sub(2) super(-))-oxidizing bacteria was studied. The composting material was turned 12 times at intervals of 1 or 2 weeks during the 16-week experimental period. The first increase in nitrifying microorganism was confirmed at the second week, and it was solely ammonia-oxidizing bacteria (AOB). The pattern of NO sub(2) super(-) in the material agreed with that of N sub(2)O. Accumulation of NO sub(2) super(-) resulting from the unbalanced composition of nitrifying communities seemed to be an important factor in N sub(2)O. Results indicated that improving composition of nitrifying communities for complete nitrification promotion would be useful to establish a composting method with low N sub(2)O emissions.
ISSN:0013-936X