摘要
为阐明木质纤维素原料乙醇发酵残留物产甲烷的能力,以汽爆玉米秸秆为原料进行高底物浓度同步糖化发酵(SSF)产乙醇,并将乙醇发酵残留物、发酵残留物上清及固体部分分别进行产甲烷潜力实验。研究结果表明,汽爆玉米秸秆同步糖化发酵底物浓度达到30%(w/w),乙醇浓度为48.9g/L。发酵残留物产甲烷潜力为46mL CH_4/g底物,上清部分产甲烷潜力为12mL CH_4/g底物,固体部分产甲烷潜力达到286mL CH_4/g底物,从而证明高底物浓度汽爆玉米秸秆乙醇发酵残留物具有较好的产甲烷潜力。
Anaerobic digestion of fermentation stillage from pretreated lignolellulosic biomass material was investigated. As a result, ethanol production by fed-batch SSF from steam-exploded corn stover at a high substrate loading of 30% (w/w) was carried out, and the final ethanol titer was 48.9 g/L. The methane potential of whole stillage, liquid fraction and solids fraction was 46, 12, 286 mL CH4/g substrate respectly. These results indicate that steam-exploded corn stover fermentation stillage has a great potential for methane production.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第3期542-545,共4页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(31570790)
国家科技支撑计划(2013BAD22B03)
北京市教育委员会科技计划重点项目(KZ201310028034)
关键词
发酵残留物
甲烷潜力
厌氧消化
乙醇发酵
fermentation stillage
methane potential
anaerobic digestion
ethanol fermentation