Optimization of H2SO4-catalyzed hydrothermal pretreatment of rapeseed straw for bioconversion to ethanol: Focusing on pretreatment at high solids content

作者: Xuebin Lu , Yimin Zhang , Irini Angelidaki

DOI: 10.1016/J.BIORTECH.2009.01.008

关键词: Ethanol fuelBioconversionXyloseFermentationStrawBiochemistryChemistryEnzymatic hydrolysisChromatographyCelluloseEthanol

摘要: Abstract A central composite design of response surface method was used to optimize H2SO4-catalyzed hydrothermal pretreatment rapeseed straw, in respect acid concentration (0.5–2%), treatment time (5–20 min) and solid content (10–20%) at 180 °C. Enzymatic hydrolysis fermentation were also measured evaluate the optimal conditions for maximizing ethanol production. The results showed that more significant than optimization xylose release cellulose recovery. Pretreatment with 1% sulfuric 20% 10 min 180 °C found be most condition straw After enzymatic hydrolysis, 75.12% total xylan 63.17% glucan converted glucose, respectively. Finally, 66.79% theoretical yielded after fermentation.

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