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Title: Biogas from lignocellulosic biomass
Authors: Berglund Odhner, Peter
Sárvári Horváth, Ilona
Kabir, Maryam M.
Shabbauer, Anna
Department: University of Borås. School of Engineering
Issue Date: 2012
ISSN: 1102-7371
Pages: Rapport 247
Series/Report no.: Rapport SGC
Publisher: Svenskt Gastekniskt Center AB, SGC
Media type: text
Publication type: report
Subject Category: Subject categories::Engineering and Technology
Area of Research: IH Energi och material
Strategic Research Area: none
Abstract: Grontmij AB has cooperated with the University of Borås to evaluate the technological and economical possibilities for biogas production from substrates containing lignocellulose, such as forest residues, straw and paper. The state of knowledge regarding biogas production from cellulosic biomass has been summarized. The research in the field has been described, especially focusing on pretreatment methods and their results on increased gas yields. An investigation concerning commercially available pretreatment methods and the cost of these technologies has been performed. An economic evaluation of biogas production from lignocellulosic materials has provided answers to questions regarding the profitability of these processes. Pretreatment with steam explosion was economically evaluated for three feedstocks – wood, straw and paper – and a combination of steam explosion and addition of NaOH for paper. The presented costs pertain to costs for the pretreatment step as it, in this study, was assumed that the pretreatment would be added to an existing plant and the lignocellulosic substrates would be part of a co-digestion process. The results of the investigation indicate that it is difficult to provide a positive net result when comparing the cost of pretreatment versus the gas yield (value) for two of the feedstocks – forest residues and straw. This is mainly due to the high cost of the raw material. For forest residues the steam pretreatment cost exceeded the gas yield by over 50 %, mainly due to the high cost of the raw material. For straw, the production cost was similar to the value of the gas. Paper showed the best economic result. The gas yield (value) for paper exceeded the pretreatment cost by 15 %, which makes it interesting to study paper further.
Sponsorship: This project has been financed by The Swedish Gas Center (SGC).
Sustainable development: sustainable development
Appears in Collections:Böcker och bokkapitel / Books and book chapters (IH)

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