Biosystems Engineering, Journal Year: 2024, Volume and Issue: 248, P. 218 - 228
Published: Nov. 5, 2024
Language: Английский
Journal of Environmental Quality, Journal Year: 2023, Volume and Issue: 52(6), P. 1139 - 1151
Published: Sept. 13, 2023
Manure management is a significant source of global methane emissions, and there an increased interest in understanding predicting emissions. The hydrolysis rate manure organic matter critical for We estimated constants crude protein, fibers, lipids used the Arrhenius equation to describe its dependency on temperature. Simultaneously, measurements emission, 13/12 C isotope ratios, methanogen community were conducted. This was achieved by incubating fresh pig without inoculum at 10°C, 15°C, 20°C, 25°C 85 days lab-scale setup. Hydrolysis hemicellulose cellulose more with temperature than but still, protein highest all temperatures. Results suggested that consisted multiple substrate groups displaying large differences degradability. Lipids lignin not hydrolyzed during incubations. Cumulative emissions 7.13 ± 2.69, 24.6 8.00, 66.7 4.8, 105.7 7.14 gCH4 kgVS-1 25°C, respectively, methanogenic shifted from Methanosphaera toward Methanocorpusculum over time quickly higher study provides important parameter estimates dependencies temperature, which mechanistic emission models. Further work should focus characterizing degradable pools as they might be main carbon management.
Language: Английский
Citations
2
Agriculture, Journal Year: 2023, Volume and Issue: 13(9), P. 1778 - 1778
Published: Sept. 7, 2023
The EU’s ambition to establish economy-wide climate neutrality by 2050 requires challenging transformations in many economic activities. This paper aims investigate the nexus of structural changes and greenhouse gas emissions (GHGEs) an important sector livestock system, namely pig farming, during period 2010–2020 discuss main directions GHGE reduction. academic novelty this contribution is characterised a combination shift-share cluster analysis that allows for investigation evolution phenomenon, applying sustainability prism order understand between farming as well combining national EU levels. Results suggest steep decline number holdings moderate reduction units (LSUs) on farms do not bring tangible results. confirms systems pre-2004 member states, except Finland Greece, demonstrated positive developments or lower with pigs live swine LSUs compared other countries, while dominant share post-2003 rate was higher. research identifies population, improvement feed production development related supply chains, manure management utilisation reduction; however, identified clusters are different potentials when aforementioned measures. Recommendations include support actions focus from contribute establishment circular economy EU.
Language: Английский
Citations
1
Biosystems Engineering, Journal Year: 2024, Volume and Issue: 242, P. 169 - 178
Published: May 6, 2024
Language: Английский
Citations
0
Journal of Environmental Quality, Journal Year: 2024, Volume and Issue: 53(5), P. 589 - 603
Published: July 25, 2024
Greenhouse gas emissions from liquid livestock manure storage significantly contribute to global warming. Accurate farm-scale models are essential for predicting these and evaluating management strategies, but they rely on multiple parameters describing carbon loss dynamics. Surface respiration may influence methane emission, yet it is not explicitly included in current models. We conducted experiments measure pig surface rate its effect organic matter degradation dioxide emissions. Manure was incubated 283 days at 10°C or 20°C under aerobic anaerobic conditions, while measuring emission. This followed by digestion 38°C. reduced the content, temperature dependent. Methane emission affected respiration, suggesting that substrate availability rate-limiting methanogenesis. rates were 18.1 ± 3.5 g CO
Language: Английский
Citations
0
Biosystems Engineering, Journal Year: 2024, Volume and Issue: 248, P. 218 - 228
Published: Nov. 5, 2024
Language: Английский
Citations
0