A new modeling approach to calculate GHG and NH3 emissions from anaerobic digestion processes is proposed.
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The new model is used to simulate C and N flows and GHG emissions for a set of scenarios exploring different conditions.
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Post-digestion emissions and its relationship with the anaerobic digestion performance are the main factors affecting net GHG emissions.
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Gas tight digestate storage is recommended as well as operational conditions enhancing the process efficiency.
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Potential for GHG mitigation through manure anaerobic digestion is higher in warmer regions, where it should be promoted.
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The model can be integrated in holistic approaches to develop adequate mitigation strategies in the agricultural sector.
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