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首页> 外文期刊>International journal of green energy >Effects of Temperature on Steam Explosion Pretreatment of Poplar Hybrids with Different Lignin Contents in Bioethanol Production
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Effects of Temperature on Steam Explosion Pretreatment of Poplar Hybrids with Different Lignin Contents in Bioethanol Production

机译：温度对生物乙醇生产中不同木质素含量杨树杂种蒸汽爆炸预处理的影响。

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摘要

The aim of this study is to evaluate the effect of the lignin content in four hybrid poplars for enhancing ethanol production. The study was conducted using steam explosion at 200 and 220 degrees C for 5 min as a pre-treatment and then a simultaneous saccharification and fermentation (SSF) process with Saccharomyces cerevisiae. The composition of raw material, liquid, and solid fraction obtained after pretreatment, enzymatic digestion, and ethanol production under the different experimental conditions was analyzed. The best results for bioethanol production were obtained from steam explosion pre-treatment carried out at 220 degrees C with the hybrid poplar H-29, with cellulose recovery of over 63%, enzymatic hydrolysis yield of approximately 67%, and SSF yield of 70% of the theoretical value. However, the highest enzymatic hydrolysis yield (79%) was obtained for the hybrid poplar H-34, which has the lowest lignin content.
机译：这项研究的目的是评估四个杂交杨树中木质素含量对提高乙醇产量的影响。该研究使用200和220摄氏度的蒸汽爆炸进行5分钟作为预处理，然后与酿酒酵母同时进行糖化和发酵（SSF）工艺。分析了在不同实验条件下预处理，酶消化和生产乙醇后获得的原料，液体和固体部分的组成。生物乙醇生产的最佳结果得益于杂交杨木H-29在220摄氏度下进行的蒸汽爆炸预处理，纤维素回收率超过63％，酶水解产率约为67％，SSF产率为70％的理论值。然而，木质素含量最低的杂种杨H-34的酶水解率最高（79％）。

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