Study of influence of yeast cells treatment on sugarcane ethanol fermentation: Operating conditions and kinetics
Biochemical Engineering Journal(2019)
Abstract
•A two-stage yeast treatment is critical to maintain VHG fermentation with cell recycling.•The optimal conditions of acid treatment stage were 30 °C, 2.65 pH and 30 min.•The highest cell viability was found at relatively low temperature and negative ORP.•Reaction rates were calculated for the yeast reactivation stage using a mechanistic model.•Real-time measurements yielded valuable information to modeling and optimization.
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Key words
Yeast recycling,Kinetic modeling,Cell viability,Very-high-gravity fermentation,Ethanol
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