We have located links that may give you full text access.
Pig slurry organic matter transformation and methanogenesis at ambient storage temperatures.
Journal of Environmental Quality 2023 September 14
Manure management is a significant source of global methane emissions and there is an increased interest in understanding and predicting emissions. The hydrolysis rate of manure organic matter is critical for understanding and predicting methane emissions. We estimated hydrolysis rate constants of crude protein, fibers and lipids and used the Arrhenius equation to describe its dependency on temperature. Simultaneously measurements of methane emission, 13/12 C isotope ratios, and methanogen community were also conducted. This was achieved by incubating fresh pig manure without inoculum at 10, 15, 20 and 25°C for 85 days in a lab-scale setup. Hydrolysis of hemicellulose and cellulose increased more with temperature than crude protein, but still, hydrolysis rate of crude protein was highest at all temperatures. Results suggested that crude protein consisted of multiple substrate groups displaying large differences in degradability. Lipids and lignin were not hydrolyzed during incubations. Cumulative methane emissions were 7.13±2.69, 24.6±8.00, 66.7±4.8 and 105.7±7.14 gCH4 kgVS -1 at 10, 15, 20 and 25°C, respectively, and methanogenic community shifted from Methanosphaera towards Methanocorpusculum over time and more quickly so at higher temperatures. This study provides important parameter estimates and dependencies on temperature, which is important in mechanistic methane emission models. Further work should focus on characterizing quickly degradable substrate pools in the manure organic matter as they might be the main carbon source of methane emission from manure management. This article is protected by copyright. All rights reserved.
Full text links
Related Resources
Trending Papers
Guillain-Barré syndrome: History, pathogenesis, treatment, and future directions.European Journal of Neurology 2024 May 17
Angiotensin Receptor Blocker-Neprilysin Inhibitor for Heart Failure with Reduced Ejection Fraction.Pharmacological Research : the Official Journal of the Italian Pharmacological Society 2024 May 12
The Therapy and Management of Heart Failure with Preserved Ejection Fraction: New Insights on Treatment.Cardiac Failure Review 2024
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app