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Ethanol production by modified polyvinyl alcohol-immobilized Zymomonas mobilis and in situ membrane distillation under very high gravity condition
- Zhang, Quanguo, Nurhayati,, Cheng, Chieh-Lun, Lo, Yung-Chung, Nagarajan, Dillirani, Hu, Jianjun, Chang, Jo-Shu, Lee, Duu-Jong
- Applied energy 2017 v.202 pp. 1-5
- Zymomonas mobilis, bioethanol, culture media, distillation, ethanol, ethanol production, fermentation, glucose
- Concentration of ethanol from the fermentation broth is an energy-intensive process. Very high gravity (VHG) process with modified polyvinyl alcohol-immobilized Zymomonas mobilis cells integrated with in situ bioethanol removal via vacuum membrane distillation (VMD) was proposed to mitigate product inhibition effects in VHG fermentation. The proposed VHG+VMD system, at 300g/L glucose loading, produced 127.4g/L (16.1%v/v) ethanol, at 63.7g/L−h productivity and 84.9% glucose conversion rate, which is the highest in reported literature.