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Biogas production from wheat straw and manure: Impact of pretreatment and process operating parameters
SLU Swedish University of Agricultural Science, Sweden.
SLU Swedish University of Agricultural Science, Sweden.
RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
Norwegian University of Life Sciences, Norway.
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2013 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 149, p. 232-237Article in journal (Refereed) Published
Abstract [en]

Non-treated or steam-exploded straw in co-digestion with cattle manure was evaluated as a substrate for biogas production compared with manure as the sole substrate. All digestions were performed in laboratory-scale CSTR reactors (5L) operating with an organic loading late of approximately 2.8g VS/L/day, independent of substrate mixture. The hydraulic retention was 25days and an operating temperature of 37, 44 or 52°C. The co-digestion with steam exploded straw and manure was evaluated with two different mixtures, with different proportion. The results showed stable performance but low methane yields (0.13-0.21NLCH4/kg VS) for both manure alone and in co-digestion with the straw. Straw appeared to give similar yield as manure and steam-explosion treatment of the straw did not increase gas yields. Furthermore, there were only slight differences at the different operating temperatures.

Place, publisher, year, edition, pages
2013. Vol. 149, p. 232-237
Keywords [en]
Biogas, C/N ratio, Cattle manure, Steam explosion, Wheat straw
National Category
Agricultural Science, Forestry and Fisheries
Identifiers
URN: urn:nbn:se:ri:diva-2407DOI: 10.1016/j.biortech.2013.09.054PubMedID: 24121239Scopus ID: 2-s2.0-84885232973OAI: oai:DiVA.org:ri-2407DiVA, id: diva2:959997
Available from: 2016-09-07 Created: 2016-09-07 Last updated: 2020-12-01Bibliographically approved

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