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Enhanced biogas production from rice straw, triticale straw and softwood spruce by NMMO pretreatment
University of Borås, School of Engineering.
University of Borås, School of Engineering.
University of Borås, School of Engineering.
University of Borås, School of Engineering.ORCID iD: 0000-0003-4887-2433
2012 (English)In: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 36, 116-120 p.Article in journal (Refereed) Published
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

Softwoodspruce (chips and milled), ricestraw and triticale (a hybrid of rye and wheat) straw, were pretreated with N-methylmorpholine-N-oxide (NMMO or NMO) prior to anaerobic digestion to produce biogas. The pretreatments were performed at 130 °C for 1–15 h, and the digestions continued for six weeks. The digestions of untreated chips (10 mm) and milled (<1 mm) spruce, ricestraw and triticalestraw resulted in 11, 66, 22 and 30 Nml CH4/g raw material. However, the pretreatments have improved these methane yields by 400–1200%. The best digestion results of the pretreated chips and milled spruce, ricestraw and triticalestraw were 125, 245, 157 and 203 Nml CH4/g raw material (or 202, 395, 328 and 362 Nml CH4/g carbohydrates) respectively, which correspond to 49, 95, 79 and 87% of the theoretical yield of 415 Nml CH4/g carbohydrates. Although the experiments were carried out for six weeks, one and a half weeks was enough to digest the materials.

Place, publisher, year, edition, pages
Pergamon , 2012. Vol. 36, 116-120 p.
Keyword [en]
spruce, rice straw, triticale straw, biogas, n-methylmorpholine-n-oxide, pretreatment
Keyword [sv]
Energi och material
National Category
Environmental Biotechnology
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-1289DOI: 10.1016/j.biombioe.2011.10.019ISI: 000300469700013Local ID: 2320/10977OAI: oai:DiVA.org:hb-1289DiVA: diva2:869313
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-08-23Bibliographically approved

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Teghammar, AnnaKarimi, KeikhosroSárvári Horváth, IlonaTaherzadeh, Mohammad
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