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Carlos-Pinedo, SandraORCID iD iconorcid.org/0000-0002-2838-6545
Publications (2 of 2) Show all publications
Carlos-Pinedo, S., Wang, Z., Eriksson, O. & Soam, S. (2020). Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation. Waste Management, 107, 133-142
Open this publication in new window or tab >>Study of the digestion process at a full-scale solid-state biogas plant by using ORWARE: Model modification and implementation
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
Keywords
System assessment model, Solid-state anaerobic digestion, Full-scale, Methane production, Feedstock
National Category
Industrial Biotechnology
Identifiers
urn:nbn:se:hig:diva-32177 (URN)10.1016/j.wasman.2020.03.036 (DOI)32283487 (PubMedID)2-s2.0-85082933758 (Scopus ID)
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
Carlos-Pinedo, S., Wang, Z. & Eriksson, O. (2019). Methane yield from SS-AD: Experiences to learn by a full spectrum analysis at laboratory-, pilot- and full-scale. Biomass and Bioenergy, 127, Article ID 105270.
Open this publication in new window or tab >>Methane yield from SS-AD: Experiences to learn by a full spectrum analysis at laboratory-, pilot- and full-scale
2019 (English)In: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 127, article id 105270Article, review/survey (Refereed) Published
Abstract [en]

Solid-state anaerobic digestion (SS-AD) takes place when solid content of the substrate is higher than 15%. Some advantages of this technology have been recognized as e.g., less required water added to raw feedstock and consequently minimized digester size and cost, higher volumetric organic loading rates (OLR) that may lead to higher efficiency methane yield and better acceptance of a wide range of feedstocks. However, scientific studies of SS-AD at pilot- and full-scale are very few and difficulties have been reported in operating SS-AD, especially when the system undergoes a scale-up, where methane production is the purpose. As a result, this review gives a summary of scientific studies for SS-AD processes at laboratory-, pilot- and full-scale, where a great diversity of substrate composition, reactor design and operational parameters have been categorized, and their performances in terms of methane yield have been analyzed. This, in turn, helps to identify that factors affecting methane yields at different scales arise mainly from operational conditions as well as the characteristic of feedstocks. This review even contributes to suggest several strategies for improvement of methane yield at full-scale.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Solid-state anaerobic digestion, Methane yield, Improvement
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:hig:diva-30037 (URN)10.1016/j.biombioe.2019.105270 (DOI)000478564300033 ()2-s2.0-85067212403 (Scopus ID)
Note

Funding agency:

University of GävleResearch foundation Gästrikeregionens miljö Gästrike Återvinnare Utveckling AB 

Available from: 2019-06-19 Created: 2019-06-19 Last updated: 2020-04-21Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-2838-6545

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