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Abstract ▼ AI-Helper

One of the objectives of this work is to obtain information relevant to the industrial production of alcohol from sugar. The fermentation of alcohol by a strain of saccharomycess cerevisiae ATCC 24858 was studied In a continuous single-stage process with recycle of the cells via tangential flow micr...

One of the objectives of this work is to obtain information relevant to the industrial production of alcohol from sugar. The fermentation of alcohol by a strain of saccharomycess cerevisiae ATCC 24858 was studied In a continuous single-stage process with recycle of the cells via tangential flow microfiltration membranes. The experimental results reported in this study pertain to continuous cultures with total cell-recycle by varying the dilution rate (D=0.3, 0.5, and 0.7 $hr^{-1}$) and glucose concentration (50, 100, 150, and 200g/l sugar solution). Productivity using a repeated cell recycle system was found extremely high, 1.e., over 10 to 29 times higher than that of a smile batch system. When a sugar concentration of 200g/1 at dilution rate, 0.7 hr-1 was used, 83.9g/l ethanol was formed with an ethanol yield of 0.42(82% of theoretical) based on sugars utilized.