Production of 2,3-butanediol in a membrane bioreactor with cell recycle

  title={Production of 2,3-butanediol in a membrane bioreactor with cell recycle},
  author={A. -P. Zeng and Hanno Biebl and W. -D. Deckwer},
  journal={Applied Microbiology and Biotechnology},
The production of 2,3-butanediol by Enterobacter aerogenes DSM 30053 was studied in a cell recycle system with a microfiltration module. Emphasis was put on the influence of oxygen supply, cell residence time, dilution rate, and pH. Under optimal conditions a productivity as high as 14.6 g butanediol + acetoin/l per hour was achieved with a product concentration of 54 g/l and a product yield of 88%. This productivity is three times higher than that of an ordinary continuous culture. The… CONTINUE READING
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