Dry‐Grind Process for Fuel Ethanol by Continuous Fermentation and Stripping
- 1 January 2000
- journal article
- Published by Wiley in Biotechnology Progress
- Vol. 16 (4), 541-547
- https://doi.org/10.1021/bp0000297
Abstract
Conversion of a high‐solids saccharified corn mash to ethanol by continuous fermentation and stripping was successfully demonstrated in a pilot plant consuming 25 kg of corn per day. A mathematical model based on previous pilot plant results accurately predicts the specific growth rate obtained from these latest results. This model was incorporated into a simulation of a complete dry‐grind corn‐to‐ethanol plant, and the cost of ethanol production was compared with that of a conventional process. The results indicate a savings of $0.03 per gallon of ethanol produced by the stripping process. The savings with stripping result from the capacity to ferment a more concentrated corn mash so there is less water to remove downstream.Keywords
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