Evaluating the opportunity for utilising anaerobic digestion and pyrolysis of livestock manure and grass silage to decarbonise gas infrastructure : A Northern Ireland case study.

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dc.contributor.authorMehta, Neha
dc.contributor.authorAnderson, Aine
dc.contributor.authorJohnston, Christopher
dc.contributor.authorRooney, David W.
dc.date.accessioned2022-07-11T10:45:28Z
dc.date.available2022-07-11T10:45:28Z
dc.date.issued2022-07-04
dc.descriptionPublication history: Accepted - 24 June 2022; Published online - 4 July 2022en_US
dc.description.abstractThe need to mitigate climate change and improve energy security has led to an increasing interest in the utilisation of renewable gas to decarbonise natural gas use. Northern Ireland serves as an interesting case study to evaluate how biomethane from manure and silage material can displace natural gas. This is because of high agricultural intensity, the low penetration of gas relative to the wider UK and the modern pipeline infrastructure. This study included spatial mapping of biomethane yield and life cycle assessment for processing scenarios. The results demonstrated that current manure management i.e., storage and application of manure to grassland, results in 344 kg CO2 equivalent/person of greenhouse gases and 9.7 kg/person of ammonia being emitted. In a second scenario where collected manure and underutilised grass silage is routed to anaerobic digestion, the estimated net energy produced is 6124 GWh, with −464 kg CO2 equivalent/person. A third scenario, combining anaerobic digestion and pyrolysis, also produces 6124 GWh and 200 kilo tonnes of biochar (retaining 64% of manure phosphorus), −563 kg CO2 equivalent/person. This research evaluates the opportunity for biomethane while acknowledging that a comprehensive approach which balances energy potentials and nutrient management is required for sustainable biomethane based decarbonisation.en_US
dc.description.sponsorshipThis work is supported by the Centre for Advanced Sustainable Energy (CASE). CASE is funded through Invest NI's Competence Centre Programme and aims to transform the sustainable energy sector through business researchen_US
dc.identifierhttp://hdl.handle.net/20.500.12518/466
dc.identifier.citationMehta, N., Anderson, A., Johnston, C.R. and Rooney, D.W. (2022) ‘Evaluating the opportunity for utilising anaerobic digestion and pyrolysis of livestock manure and grass silage to decarbonise gas infrastructure: A Northern Ireland case study’, Renewable Energy. Elsevier BV. doi:10.1016/j.renene.2022.06.115.en_US
dc.identifier.issn0960-1481
dc.identifier.issn1879-0682
dc.identifier.urihttps://doi.org/10.1016/j.renene.2022.06.115
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).en_US
dc.subjectSpatial mappingen_US
dc.subjectLife cycle assessmenten_US
dc.subjectBiomethaneen_US
dc.subjectBiocharen_US
dc.subjectPyrolysisen_US
dc.subjectCircular economyen_US
dc.titleEvaluating the opportunity for utilising anaerobic digestion and pyrolysis of livestock manure and grass silage to decarbonise gas infrastructure : A Northern Ireland case study.en_US
dc.typeArticleen_US
dcterms.dateAccepted2022-06-24
dcterms.dateSubmitted2022-03-07

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