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.

中文翻译：

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改性聚乙烯醇固定化运动发酵单胞菌和在非常高的重力条件下原位膜蒸馏制取乙醇

从发酵液中浓缩乙醇是一个耗能的过程。为了减轻VHG发酵过程中的产物抑制作用，提出了利用改性聚乙烯醇固定的运动发酵单胞菌细胞与通过真空膜蒸馏（VMD）原位去除生物乙醇相结合的超高重力（VHG）工艺。拟议的VHG + VMD系统在葡萄糖负荷为300g / L时产生127.4g / L（16.1％v / v）乙醇，生产率为63.7g / L-h，葡萄糖转化率为84.9％，这是文献报道中最高的。