کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6450404 | 1415994 | 2017 | 4 صفحه PDF | دانلود رایگان |
Forward osmosis (FO), driven by high osmotic pressure, was used for the first time for bioethanol production from lignocellulosic biomass. A commercial membrane, TFC-ES (Hydration Technology Innovation), was used and 3.6Â M triethylamine (TEA) was chosen as the draw solution because the concentration ratio against a model xylose solution was similar to that achieved with 2.5Â M NaCl. The liquid fraction of hot-water-pretreated rice straw was concentrated by using the FO membrane. The initial sugar concentration of 199Â mM increased to 825 and 1612Â mM after 48 and 72Â h of FO concentration, respectively, and these values were much higher than those obtained from nanofiltration. Simultaneous saccharification and fermentation of the liquid fraction after 48Â h of FO concentration by xylose-fermenting recombinant Saccharomyces cerevisiae produced 17.7Â g/L of ethanol after 24Â h fermentation. Thus, the FO process has tremendous potential to up-concentrate sugars obtained from lignocellulosic biomass.
Journal: Biochemical Engineering Journal - Volume 121, 15 May 2017, Pages 13-16