Ensiling for anaerobic digestion (AD): a review of key considerations to maximise methane yields

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dc.cclicenceCC-BY-NC-NDen
dc.contributor.authorVilla, R.
dc.contributor.authorOrtega Rodriguez, Leila
dc.contributor.authorFenech, Cecilia
dc.contributor.authorAnika, Ogemdi Chinwendu
dc.date.acceptance2020-09-21
dc.date.accessioned2020-09-28T14:12:31Z
dc.date.available2020-09-28T14:12:31Z
dc.date.issued2020-09-25
dc.descriptionThe file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.en
dc.description.abstractGrowth in anaerobic digestion (AD) has expanded the use of silage to preserve crops intended for renewable energy generation. Preservation of seasonal crops and their residues is critical in a process that needs continuous feeding. Whilst the impact of different crops and harvesting times on methane formation is relatively well understood, to date the specific considerations for maximising methane yields through management practice have been largely ignored. The present paper reviews the current state of knowledge on silage practice for biogas production and specifically on the factors affecting methane yields of ensiled crops, as well as their influence on the silage quality, and provides suggestions for further research in the field. Data shows that ensiling is able to conserves 93% of crops gross energy when good practices are followed. Shorter chop length (7-10 mm), lower DM feedstock (20-35%) and lower compaction values (less than 250 kg/m3) are used to achieve higher biogas yields. Increase biogas production can also be obtained by managing the organic acids production with the preferential formation of acetic acid and ethanol instead of lactic acid via enzymatic or microbial additives. The review outcomes show that more research is required to provide a clear-cut distinction between the requirements for ensiling crops for AD versus crops for animal feed.en
dc.funderOther external funder (please detail below)en
dc.funder.otherERDF, Bio-Thermal Renewable Energy Demonstrator (Grant no ERDF/12/057)en
dc.identifier.citationVilla R., Ortega Rodriguez L., Cecilia Fenech C., Anika O.C. (2020) Ensiling for anaerobic digestion: a review of key considerations to maximise methane yields. Renewable & Sustainable Energy Reviews, 134:110401en
dc.identifier.doihttps://doi.org/10.1016/j.rser.2020.110401
dc.identifier.urihttps://dora.dmu.ac.uk/handle/2086/20221
dc.language.isoenen
dc.peerreviewedYesen
dc.projectidERDF/12/057en
dc.publisherElsevieren
dc.researchinstituteInstitute of Energy and Sustainable Development (IESD)en
dc.subjectBiogasen
dc.subjectmethane yielden
dc.subjectdry matteren
dc.subjectquality silageen
dc.subjectstorage systemsen
dc.titleEnsiling for anaerobic digestion (AD): a review of key considerations to maximise methane yieldsen
dc.typeArticleen

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