Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7077643 | Bioresource Technology | 2014 | 31 Pages |
Abstract
Butanol recovery from acetone-butanol-ethanol (ABE) fed-batch fermentation using permeating-heating-gas was determined in this study. Fermentation was performed with Clostridium acetobutylicum B3 in a fibrous bed bioreactor and permeating-heating-gas stripping was used to eliminate substrate and product inhibition, which normally restrict ABE production and sugar utilization to below 20Â g/L and 60Â g/L, respectively. In batch fermentation (without permeating-heating-gas stripping), C. acetobutylicum B3 utilized 60Â g/L glucose and produced 19.9Â g/L ABE and 12Â g/L butanol, while in the integrated process 290Â g/L glucose was utilized and 106.27Â g/L ABE and 66.09Â g/L butanol were produced. The intermittent gas stripping process generated a highly concentrated condensate containing approximately 15% (w/v) butanol, 4% (w/v) acetone, a small amount of ethanol (<1%), and almost no acids, resulting in a highly concentrated butanol solution [â¼70% (w/v)] after phase separation. Butanol removal by permeating-heating-gas stripping has potential for commercial ABE production.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Yong Chen, Hengfei Ren, Dong Liu, Ting Zhao, Xinchi Shi, Hao Cheng, Nan Zhao, Zhenjian Li, Bingbing Li, Huanqing Niu, Wei Zhuang, Jingjing Xie, Xiaochun Chen, Jinglan Wu, Hanjie Ying,