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- Title
Isotopically enriched ammonium shows high nitrogen turnover in the pile top zone of dairy manure compost.
- Authors
Maeda, K.; Toyoda, S.; Yano, M.; Hattori, S.; Fukasawa, M.; Nakajima, K.; Yoshida, N.
- Abstract
δ15N-NH4+ of dairy manure compost piles with and without bulking agent (10% w=w) were compared to understand the significant mitigation of N2O emission by the use of bulking agent. δ15N-NH4+ of each locations of the pile (top, side and core) were also compared. Piles with bulking agent showed significantly higher δ15N values (17.7 ± 1.3 ‰) than that of the piles without bulking agent (11.8 ±0.9 ‰) at the end of the process, reflecting significant higher nitrogen conversion and NH3 loss occurred in the pile with bulking agent. The pile top samples, especially in the piles with bulking agent, showed very high NH+4 concentrations with significant high 15N (δ15N: 12.7-29.8 ‰) values, indicating extremely high nitrogen conversion, nitrification-denitrification activity of the microbes and NH3 volatilization occurred in this zone.
- Subjects
AMMONIUM compounds; DAIRY waste; DENITRIFICATION; VAPORIZATION in water purification; COMPARATIVE studies
- Publication
Biogeosciences Discussions, 2015, Vol 12, Issue 10, p7577
- ISSN
1810-6277
- Publication type
Article
- DOI
10.5194/bgd-12-7577-2015