Greenhouse gas emissions from different pig manure management techniques : a critical analysis

Dennehy, Conor and Lawlor, Peadar G. and Jiang, Yan and Gardiner, Gillian E. and Xie, Sihuang and Nghiem, Long D. and Zhan, Xinmin (2017) Greenhouse gas emissions from different pig manure management techniques : a critical analysis. Frontiers of Environmental Science and Engineering, 11 (3). ISSN 2095-2201

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Manure management is the primary source of greenhouse gas (GHG) emissions from pig farming, which in turn accounts for 18% of the total global GHG emissions from the livestock industry. In this review, GHG emissions (N2O and CH4 emissions in particular) from individual pig manure (PGM) management practices (European practises in particular) are systematically analyzed and discussed. These manure management practices include manure storage, land application, solid/liquid separation, anaerobic digestion, composting and aerobic wastewater treatment. The potential reduction in net GHG emissions by changing and optimising these techniques is assessed. This review also identifies key research gaps in the literature including the effect of straw covering of liquid PGM storages, the effect of solid/liquid separation, and the effect of dry anaerobic digestion on net GHG emissions from PGM management. In addition to identifying these research gaps, several recommendations including the need to standardize units used to report GHG emissions, to account for indirect N2O emissions, and to include a broader research scope by conducting detailed life cycle assessment are also discussed. Overall, anaerobic digestion and compositing to liquid and solid fractions are best PGM management practices with respect to their high GHG mitigation potential. [Figure not available: see fulltext.].

Item Type: Article
Additional Information: Publisher Copyright: © 2017, Higher Education Press and Springer-Verlag Berlin Heidelberg.
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/2300
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Depositing User: Admin SSL
Date Deposited: 19 Oct 2022 23:03
Last Modified: 16 Jul 2023 23:50

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