Enzymatic hydrolysis and fermentation of corn for fuel alcohol
The integration of enzyme saccharification with fermentation reduces the total time required to produce acceptable levels of ethanol. The use of a more concentrated mash (84.8 L total mash/bu corn) results in a 26.6% increase in ethanol productivity and a 21.4% increase in beer ethanol concentration compared to standard corn mash (96.6 L total mash/bu corn). Thus, the energy requirement and cost of distillation can be reduced. The addition of waste cola syrup at 30 g invert sugar/L total mash gave a 19% increase in ethanol concentration in the final beer and required only a small increase in period of fermentation. Surplus laundry starch can replace 30-50% of the weight of corn normally used in fermentation without influencing ethanol production or the time required for fermentation. Both of these waste materials reduce the unit cost of ethanol and demonstrate the value of such substances in ethanol systems.
- Research Organization:
- Univ. of Florida, Gainesville
- OSTI ID:
- 5789929
- Journal Information:
- Biotechnol. Bioeng.; (United States), Vol. 27:3
- Country of Publication:
- United States
- Language:
- English
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Farm-scale production of fuel ethanol and wet grain from corn in a batch process
Farm-scale production of fuel ethanol and wet grain from corn in a batch process
Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ETHANOL FUELS
BIOSYNTHESIS
MAIZE
ENZYMATIC HYDROLYSIS
FERMENTATION
PRODUCTIVITY
COST
ENERGY EFFICIENCY
EXPERIMENTAL DATA
WASTE PRODUCT UTILIZATION
ALCOHOL FUELS
BIOCONVERSION
CEREALS
CHEMICAL REACTIONS
DATA
DECOMPOSITION
EFFICIENCY
FUELS
GRASS
HYDROLYSIS
INFORMATION
LYSIS
NUMERICAL DATA
PLANTS
SOLVOLYSIS
SYNTHESIS
SYNTHETIC FUELS
090222* - Alcohol Fuels- Preparation from Wastes or Biomass- (1976-1989)
140504 - Solar Energy Conversion- Biomass Production & Conversion- (-1989)
320301 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Energy Sources