Process Design for Very-high-gravity Ethanol Fermentation
نویسندگان
چکیده
منابع مشابه
[Effect of temperature on the no cook, very high gravity ethanol fermentation process].
The effect of temperature on a very high gravity ethanol fermentation using no cook process was investigated. We found that a gradient temperature control strategy could improve the fermentation efficiency significantly, With the assistance of a new raw starch hydrolyzing enzyme and a gradient temperature control strategy, the ethanol concentration could reach up to 20% (V/V) within 90 h using ...
متن کاملProcess optimization for ethanol production from very high gravity (VHG) finger millet medium using response surface methodology
The Box-Wilson central composite design (CCD) based on response surface methodology (RSM) was used for ethanol fermentation using very high gravity (VHG) finger millet hydrolysate. Optimized process variables were namely, concentrations of yeast extract, magnesium sulphate and pH of the medium. High gravity mashes (>300 g dissolved solids per liter) were prepared by a thermo-stable α-amylase, f...
متن کاملCorrigendum: Redox potential driven aeration during very-high-gravity ethanol fermentation by using flocculating yeast
Ethanol fermentation requires oxygen to maintain high biomass and cell viability, especially under very-high-gravity (VHG) condition. In this work, fermentation redox potential (ORP) was applied to drive the aeration process at low dissolved oxygen (DO) levels, which is infeasible to be regulated by a DO sensor. The performance and characteristics of flocculating yeast grown under 300 and 260 g...
متن کاملVery high gravity ethanol fermentation by flocculating yeast under redox potential-controlled conditions
UNLABELLED BACKGROUND Very high gravity (VHG) fermentation using medium in excess of 250 g/L sugars for more than 15% (v) ethanol can save energy consumption, not only for ethanol distillation, but also for distillage treatment; however, stuck fermentation with prolonged fermentation time and more sugars unfermented is the biggest challenge. Controlling redox potential (ORP) during VHG ferme...
متن کاملImpact of osmotic stress and ethanol inhibition in yeast cells on process oscillation associated with continuous very-high-gravity ethanol fermentation
BACKGROUND VHG fermentation is a promising process engineering strategy aiming at improving ethanol titer, and thus saving energy consumption for ethanol distillation and distillage treatment. However, sustained process oscillation was observed during continuous VHG ethanol fermentation, which significantly affected ethanol fermentation performance of the system. RESULTS Sustained process osc...
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ژورنال
عنوان ژورنال: Energy Procedia
سال: 2014
ISSN: 1876-6102
DOI: 10.1016/j.egypro.2014.12.289