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Title: | Biochar amendment to cattle slurry reduces NH3 emissions during storage without risk of higher NH3 emissions after soil application of the solid fraction | Authors: | Viaene, J Peiren, N VANDAMME, Dries LATAF, Amine CUYPERS, Ann JOZEFCZAK, Marijke Vandecasteele, B |
Issue Date: | 2023 | Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | Source: | Waste Management, 167 , p. 39 -45 | Abstract: | 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) NH3 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 NH3 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 NH3 emissions of approximately 20%. The N sorbed from the slurry by the biochar was not released as NH3 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. | Keywords: | Biochar;Clinoptilolite elemental sulfur;N sorption;Greenhouse gas emissions;NH3 emissions | Document URI: | http://hdl.handle.net/1942/43178 | ISSN: | 0956-053X | e-ISSN: | 1879-2456 | DOI: | 10.1016/j.wasman.2023.05.023 | ISI #: | 001053320600001 | Rights: | 2023 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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Viaene et al_2023_Revised clean version.pdf | Peer-reviewed author version | 474.33 kB | Adobe PDF | View/Open |
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