Biochar amendment to cattle slurry reduces NH3 emissions during storage without risk of higher NH3 emissions after soil application of the solid fraction.
In: Waste Management, Jg. 167 (2023-07-15), S. 39-45
academicJournal
Zugriff:
[Display omitted] • Biochar reduces NH 3 emissions during cattle slurry storage up to 20% • Biochar improves the separation efficiency and the quality of the solid fraction. • Biochar increases C, (organic) N and water-available P in the solid fraction. • S° is only successful for reducing NH 3 emissions in combination with biochar. • Biochar results in a short term priming effect on the C mineralization of manure. Cattle slurry storage is a major source of gaseous N emissions. The aim of this study was to evaluate the effects of biochar, clinoptilolite and elemental sulfur (S°) on (1) NH 3 and greenhouse gas emissions during storage of cattle slurry and (2) after soil application of the enriched solid fractions; and (3) on the agronomic quality of the solid and liquid fractions. In the first phase, biochar was added to the slurry (10 g L-1); subsequently in the second phase, clinoptilolite (50 g L-1), S° (1 g L-1) and 40 g L-1 extra biochar were added. Gaseous emissions were monitored by a semi-continuous multi-gas analyzer and the agronomic quality of solid and liquid fractions was assessed after separation. The enriched solid fractions were applied to soil to study the effects on gaseous emissions, N and C mineralization. Amendment of biochar reduced NH 3 emissions during cattle slurry storage by 12% during the first 7 days. Extra amendment of biochar, clinoptilolite and S° in combination with biochar resulted in a decrease of NH 3 emissions of approximately 20%. The N sorbed from the slurry by the biochar was not released as NH 3 during soil application of the solid fractions and was not released as mineral N in the short term (within 28 days). A short-term positive priming effect of biochar on the C mineralization of manure and biochar-manure mixture applied to soil was observed. The biochar-enriched solid fractions contained more C, total and organic N and water-available P with a slow release. [ABSTRACT FROM AUTHOR]
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Biochar amendment to cattle slurry reduces NH3 emissions during storage without risk of higher NH3 emissions after soil application of the solid fraction.
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Autor/in / Beteiligte Person: | Viaene, J. ; Peiren, N. ; Vandamme, D. ; Lataf, A. ; Cuypers, A. ; Jozefczak, M. ; Vandecasteele, B. |
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Zeitschrift: | Waste Management, Jg. 167 (2023-07-15), S. 39-45 |
Veröffentlichung: | 2023 |
Medientyp: | academicJournal |
ISSN: | 0956-053X (print) |
DOI: | 10.1016/j.wasman.2023.05.023 |
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