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乙醇发酵生产过程中,针对蒸汽爆破预处理能源草提出高底物同步糖化发酵策略。当底物浓度为20%(质量分数)时,经批式补料乙醇发酵最终4种能源草本植物的最终乙醇产量分别达到15、13、16、15 g/L。随后的甲烷潜力测试结果表明:汽爆冰草与汽爆披碱草有较好的产甲烷能力,其甲烷产量分别达到562.4 m L和546.7 m L,相对应的甲烷产率为360.05 m L/g VS和382.04 m L/g VS。综合实验结果分析,相比于其他3种能源草本植物,冰草具有较高的全组分利用率及清洁能源产量。
In the process of ethanol fermentation, a high-substrate simultaneous saccharification and fermentation strategy was proposed for steam explosion pretreatment of energy sources. When the substrate concentration was 20% (mass fraction), the final ethanol yield of the final four kinds of herbaceous plants fed by fed-batch ethanol was 15, 13, 16 and 15 g / L, respectively. Subsequent methane potential test results show that: steam explosion ice grass and steam explosion Elymus better methanogenic capacity, the methane production reached 562.4 m L and 546.7 m L, respectively, corresponding to a methane yield of 360.05 m L / g VS and 382.04 m L / g VS. Comprehensive analysis of experimental results, compared with the other three kinds of energy herbs, ice grass has a higher utilization rate of all components and clean energy production.