Influence of linearly decreasing feeding rates on fed-batch ethanol fermentation of sugar-cane blackstrap molasses |
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Authors: | Margareth Krauter E Aquarone S Sato L Perego Jr W Borzani |
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Institution: | (1) Faculdade de Ciências Farmacêuticas, University of São Paulo, C.P. 30.786, 01051 São Paulo, SP, Brazil;(2) Instituto Mauá de Tecnologia, Estrada das Lágrimas 2035, 09580 São Caetano do Sul, SP, Brazil |
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Abstract: | 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.Nomenclature 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)
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average ethanol yield (% of the theoretical value) |
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Keywords: | |
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