Ethanol production by modified polyvinyl alcohol-immobilized Zymomonas mobilis and in situ membrane distillation under very high gravity condition
Journal
Applied Energy
Journal Volume
202
Pages
1-5
Date Issued
2017
Author(s)
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 300?g/L glucose loading, produced 127.4?g/L (16.1%?v/v) ethanol, at 63.7?g/L?h productivity and 84.9% glucose conversion rate, which is the highest in reported literature. ? 2017 Elsevier Ltd
Subjects
Bioethanol
Membrane distillation
Productivity
Very high gravity fermentation
Type
journal article