期刊
WOOD SCIENCE AND TECHNOLOGY
卷 49, 期 5, 页码 881-896出版社
SPRINGER
DOI: 10.1007/s00226-015-0738-4
关键词
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资金
- Research Council of Norway [190965/S60]
- Statoil ASA
- Borregaard Industries Ltd.
- Allskog BA
- Cambi AS
- Xynergo AS
- Hafslund ASA
- Weyland AS
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 similar to 3.5 in aqueous phase, 170-240 A degrees 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 similar to 3.5 in aqueous phase, 155-210 A degrees 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 similar to 65 % was reached at similar to 235 A degrees C for Norway spruce, while sugarcane bagasse reached similar to 80 % at similar to 210 A degrees C. Cellulose was subjected to degradation (5-10 % points) at these temperatures. Subsequent enzymatic hydrolysis (30 FPU/g cellulose, 32 pNPGU/g cellulose, 50 A degrees C, 48 h) of ethanol organosolv-pretreated biomass achieved complete conversion for both raw materials at the highest degrees of delignification.
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