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Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Energy Systems and Building Technology.ORCID iD: 0000-0002-2838-6545
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Environmental Science.
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Environmental Science.ORCID iD: 0000-0002-5661-2917
University of Gävle, Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, Environmental Science.
2020 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 107, p. 133-142Article in journal (Refereed) Published
Abstract [en]

The configuration of the reactor influences the digestion process and thus the product yields; other factors such as the rate of biogas production or biogas loss also affect the process specifically with high solid configuration. With these in mind, the ORganic WAste REsearch (ORWARE) anaerobic digestion sub-model was modified to be able to study solid-state anaerobic digestion (SS-AD) (using plug-flow reactor). The simulation results from the updated model agreed with the operational data with respect to methane yield, digestate yield and energy turnover. The model was found to be sensitive to changes in feedstock composition but to a lesser extent to changes in process temperature and retention time. By applying the model on several cases of liquid anaerobic digestion (L-AD), it was noticed that L-AD at mesophilic condition with 25 retention days seemed to be superior to other cases of L-AD with regard to energy turnover. However, even if similar methane production were observed for L-AD and SS-AD, the model suggested higher energy turnover for the case of SS-AD at thermophilic condition, being 10% more in average in comparison with cases of L-AD.

Place, publisher, year, edition, pages
Elsevier, 2020. Vol. 107, p. 133-142
Keywords [en]
System assessment model, Solid-state anaerobic digestion, Full-scale, Methane production, Feedstock
National Category
Industrial Biotechnology
Identifiers
URN: urn:nbn:se:hig:diva-32177DOI: 10.1016/j.wasman.2020.03.036PubMedID: 32283487Scopus ID: 2-s2.0-85082933758OAI: oai:DiVA.org:hig-32177DiVA, id: diva2:1425388
Note

The financial support from the Gästrike Återvinnare Utveckling AB and the research foundation Gästrikeregionens miljö is gratefully acknowledged.

Available from: 2020-04-21 Created: 2020-04-21 Last updated: 2020-04-21Bibliographically approved

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Carlos-Pinedo, SandraWang, ZhaoEriksson, OlaSoam, Shveta

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