AI Article Synopsis
- - The study evaluated how different stress levels and moisture contents affect gas emissions from solid dairy manure piles, focusing on key greenhouse gases like methane, carbon dioxide, and nitrous oxide.
- - Carbon dioxide was found to be the most prevalent greenhouse gas emitted across all conditions, indicating its significant role in these emissions.
- - Higher moisture levels in manure reduced gas emissions considerably, while factors like compaction had less impact, offering important strategies for better managing dairy manure to minimize environmental gas emissions.
Article Abstract
Waste management practices of solid dairy manures were evaluated under controlled conditions to study gas transport and emission inside manure piles. Three applied stresses and three moisture contents were tested to represent manure conditions managed at various pile depths. A Fourier-transform infrared spectroscopy monitor measured concentrations of greenhouses gases [methane, carbon dioxide, and nitrous oxide] and ammonia as part of gas flux rate calculations. Results showed that carbon dioxide dominated the greenhouse gas emissions under all test conditions. Gas transfer, primarily diffusion, was facilitated by manure with high mechanical strength and high permeability. Gas emission rates reduced dramatically when moisture content increased in manure with high water holding capacity, while compaction treatments did not as strongly affect the gas emission rates. Results provide fundamental insights into management strategies for reducing gas emissions from solid dairy manure.
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| http://dx.doi.org/10.1016/j.jenvman.2023.117399 | DOI Listing |
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