Biotechnol. Bioeng. Symp.; (United States) · 1981 · 15 citations · 0 references
Life SciencesBiotechnologyMicrobiologyBioprocess EngineeringFermentation EngineeringIndustrial BiotechnologyAlcoholic FermentationBatch FermentationFermentation MicrobiologyFermentation ProcessingIndustrial FermentationMicrobial FermentationActivated CarbonAlcohol FermentationAlcohol ProductionEnd-product InhibitionEthanol FermentationEthanol ProductionFermentation End ProductsMicrobial Ethanol Production
The main objective of this research is to overcome the inhibitory effects of desired end products produced by microorganisms during fermentation. It is demonstrated that online removal of toxic end product(s) by selected extractants such as higher alcohols and activated carbon can be achieved in the ethanol fermentation. Rapid fermentation using a high concentration of yeast cells has been proven to be capable of producing 135 g ethanol/L in eight hours. Theoretically, repeated rapid fermentation could be achieved if the viability of these yeast cells could be maintained at a high level through online ethanol extraction.