Continuous ethanol production using cell recycle with a settler

✍ Scribed by P. A. Boks; G. C. Eybergen

• Publisher: Springer Netherlands
• Year: 1981
• Tongue: English
• Weight: 402 KB
• Volume: 3
• Category: Article
• ISSN: 0141-5492
• DOI: 10.1007/bf00133437

✦ Synopsis

A system for a high-density culture of Zymomonas mobilis was tested using a reactor with cell recycle by means of a simple settler. Growth-limiting conditions were created by raising the temperature and lowering the amount of yeast-extract.

In this case the biomass production decreased, while the specific ethanol productivity did not change markedly. Under these conditions we succeeded in creating a system with a productivity of 40.5 g.1 .

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The choice for optimal design of the settler and optimal conditions has to be made by optimization taking into account economic and whole process considerations.