Acidification of animal slurry in housing and during storage to reduce NH3 and GHG emissions-recent advancements and future perspectives

Waste Management, Journal Year: 2025, Volume and Issue: 203, P. 114856 - 114856

Published: May 5, 2025

Ammonia and greenhouse gas emissions are an environmental issue associated with animal manure management. Concrete, practical, economic solutions needed for farmers other stakeholders around the globe to solve this issue. Decreasing slurry pH help of acids or compounds is a well-documented technique reduce ammonia methane from slurry. However, effect acidification on N2O still not clear. Recently, acidifying agents than previously used mineral have been tested such as e.g. organic acids, bio-waste materials, microbial inoculations. effectiveness these in reducing mitigation gaseous further needs be reviewed. Also, combination treatments composting, solid-liquid separation, anaerobic digestion requires consideration whole-system solutions. Here, recent studies compiled reviewed determine applicability options management deepen our understanding impact acidification. The literature review revealed that temperature fluctuations substantial acidified slurry's performance during storage. A viable substitute conventional could biomaterials like sugars whey, microbes. Furthermore, apple pulp, sugar beet molasses, grass silage examples products exhibit promise agents. gain better viability usefulness recently evaluated compounds, more research required.

Language: Английский

In-vitro method and model to estimate methane emissions from liquid manure management on pig and dairy farms in four countries

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 353, P. 120233 - 120233

Published: Feb. 1, 2024

Methane (CH

Language: Английский

Pig manure degradation and carbon emission: Measuring and modeling combined aerobic–anaerobic transformations

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