Ethanol production by modified polyvinyl alcohol-immobilized Zymomonas mobilis and in situ membrane distillation under very high gravity condition

Quanguo Zhang, Nurhayati,, Chieh-Lun Cheng, Yung-Chung Lo, Dillirani Nagarajan, Jianjun Hu, Jo-Shu Chang and Duu-Jong Lee

Applied Energy, 2017, vol. 202, issue C, 5 pages

Abstract: 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.

Keywords: Bioethanol; Very high gravity fermentation; Membrane distillation; Productivity (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1016/j.apenergy.2017.05.105

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