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Ethanol organosolv pretreatment of softwood (Picea abies) and sugarcane bagasse for biofuel and biorefinery applications
RISE, Innventia, PFI – Paper and Fiber Research Institute.
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2015 (English)In: Wood Science and Technology, ISSN 0043-7719, E-ISSN 1432-5225, Vol. 49, no 5, 881-896 p.Article in journal (Refereed) Published
Abstract [en]

Ethanol derived from biomass has the potential to be a renewable transportation fuel that can replace gasoline. This work was carried out to establish an optimized ethanol organosolv pretreatment of Norway spruce (Picea abies) for bioethanol production (63 wt% EtOH, pH 3.5 in aqueous phase, 170–240 °C, 90 min) utilizing hydrolytic enzymes in the saccharification step. To test the generality of the method, a series of ethanol organosolv pretreatments were also performed on sugarcane bagasse (50 wt% EtOH, pH 3.5 in aqueous phase, 155–210 °C, 90–120 min). The degree of delignification increased with increasing temperature during pretreatment, and the fastest increase was observed with sugarcane bagasse. The pretreatments were carried out in a batch mode. The maximum degree of delignification of 65 % was reached at 235 °C for Norway spruce, while sugarcane bagasse reached 80 % at 210 °C. Cellulose was subjected to degradation (5–10 % points) at these temperatures. Subsequent enzymatic hydrolysis (30 FPU/g cellulose, 32 pNPGU/g cellulose, 50 °C, 48 h) of ethanol organosolv-pretreated biomass achieved complete conversion for both raw materials at the highest degrees of delignification.

Place, publisher, year, edition, pages
2015. Vol. 49, no 5, 881-896 p.
National Category
Chemical Engineering Wood Science
Identifiers
URN: urn:nbn:se:ri:diva-18934DOI: 10.1007/s00226-015-0738-4Scopus ID: 2-s2.0-84938745804OAI: oai:DiVA.org:ri-18934DiVA: diva2:1040132
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cited By 2

Available from: 2016-10-26 Created: 2016-10-26 Last updated: 2017-09-14Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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