Applied Biochemistry and Biotechnology

, Volume 78, Issue 1–3, pp 535–545 | Cite as

Ethanol production by a flocculant yeast strain in a CSTR type fermentor with cell recycling

  • Ossamu Hojo
  • Carlos Osamu Hokka
  • Ana Maria Souto Maior


Tests were performed in a continuous stirred tank reactor (CSTR), with and without cell recycling, to produce ethanol. The reactor without cell recycling produced the kinetic model of ethanol production, whereas the reactor with cell recycling allowed for a study of process stability.

The Levenspiel kinetic model was adopted; however, in the case of fermentation with cell recycling, the coefficient of cell death was added. It was observed that cellular viability varied greatly throughout the fermenting process and that microaeration is of fundamental importance in maintaining the stability of the process.

Index Entries

Ethanol flocculant yeast 


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Copyright information

© Humana Press Inc. 1990

Authors and Affiliations

  • Ossamu Hojo
    • 1
  • Carlos Osamu Hokka
    • 1
  • Ana Maria Souto Maior
    • 1
  1. 1.DEQ/UFSCarSão CarlosBrazil

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