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Influence of linearly decreasing feeding rates on fed-batch ethanol fermentation of sugar-cane blackstrap molasses

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Summary

The ethanol yield was not affected and the ethanol productivity increased (≈10%) when linearly decreasing feeding rates were used instead of constant feeding rates in fed-batch ethanol fermentations.

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Abbreviations

F:

reactor feeding rate (L.h−1)

ME :

mass of ethanol in the fermentor (g)

Ms :

mass of TRS in the fermentor (g)

Mx :

mass of yeast cells (dry matter) in the fermentor (g)

P:

ethanol productivity (g.L−1.h−1)

s:

standard deviation

So :

TRS concentration in the feeding mash (g.L−1)

t:

time (h)

T:

fermentor filling-up time (h)

TRS:

total reducing sugars calculated as glucose (g.L−1)

Xo :

yeast cells concentration (dry matter) in the inoculum (g.L−1)

η:

average ethanol yield (% of the theoretical value)

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Author information

Authors and Affiliations

  1. Faculdade de Ciências Farmacêuticas, University of São Paulo, C.P. 30.786, 01051, São Paulo, SP, Brazil

    Margareth Krauter, E. Aquarone, S. Sato & L. Perego Jr.

  2. Instituto Mauá de Tecnologia, Estrada das Lágrimas 2035, 09580, São Caetano do Sul, SP, Brazil

    W. Borzani

Authors
  1. Margareth Krauter
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  2. E. Aquarone
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  3. S. Sato
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  4. L. Perego Jr.
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  5. W. Borzani
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Krauter, M., Aquarone, E., Sato, S. et al. Influence of linearly decreasing feeding rates on fed-batch ethanol fermentation of sugar-cane blackstrap molasses. Biotechnol Lett 9, 647–650 (1987). https://doi.org/10.1007/BF01033204

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  • DOI: https://doi.org/10.1007/BF01033204

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