[Process strategy for ethanol production from lignocellulose feedstock under extremely low water usage and high solids loading conditions].
The massive water and steam are consumed in the production of cellulose ethanol, which correspondingly results in the significant increase of energy cost, waster water discharge and production cost as well. In this study, the process strategy under extremely low water usage and high solids loading of corn stover was investigated experimentally and computationally. The novel pretreatment technology with zero waste water discharge was developed; in which a unique biodetoxification method using a kerosene fungus strain Amorphotheca resinae ZN1 to degrade the lignocellulose derived inhibitors was applied. With high solids loading of pretreated corn stover, high ethanol titer was achieved in the simultaneous saccharification and fermentation process, and the scale-up principles were studied. Furthermore, the flowsheet simulation of the whole process was carried out with the Aspen plus based physical database, and the integrated process developed was tested in the biorefinery mini-plant. Finally, the core technologies were applied in the cellulose ethanol demonstration plant, which paved a way for the establishment of an energy saving and environment friendly technology of lignocellulose biotransformation with industry application potential.
Zhang
Jian
J
State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai 200237, China.
Chu
Deqiang
D
Yu
Zhanchun
Z
Zhang
Xiaoxi
X
Deng
Hongbo
H
Wang
Xiusheng
X
Zhu
Zhinan
Z
Zhang
Huaiqing
H
Dai
Gance
G
Bao
Jie
J
D001674:Bioelectric Energy Sources / Q000191:economics; D056804:Biofuels / Q000032:analysis*; D001711:Biotransformation; D000431:Ethanol / Q000032:analysis / Q000378:metabolism*; D005658:Fungi / Q000378:metabolism; D007218:Industrial Microbiology / Q000379:methods*; D008031:Lignin / Q000378:metabolism*; D013227:Steam; D014867:Water / Q000032:analysis*
D056804:Biofuels; D013227:Steam; D014867:Water; C036909:lignocellulose; D000431:Ethanol; D008031:Lignin