TY - JOUR
T1 - Up-concentration of sugars in pretreated-rice straw by an osmotic pressure-driven method
AU - Shibuya, Masafumi
AU - Yasukawa, Masahiro
AU - Sasaki, Kengo
AU - Tanaka, Yasuhiro
AU - Takahashi, Tomoki
AU - Kondo, Akihiko
AU - Matsuyama, Hideto
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - 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 3.6 M triethylamine (TEA) was chosen as the draw solution because the concentration ratio against a model xylose solution was similar to that achieved with 2.5 M NaCl. The liquid fraction of hot-water-pretreated rice straw was concentrated by using the FO membrane. The initial sugar concentration of 199 mM increased to 825 and 1612 mM after 48 and 72 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 48 h of FO concentration by xylose-fermenting recombinant Saccharomyces cerevisiae produced 17.7 g/L of ethanol after 24 h fermentation. Thus, the FO process has tremendous potential to up-concentrate sugars obtained from lignocellulosic biomass.
AB - 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 3.6 M triethylamine (TEA) was chosen as the draw solution because the concentration ratio against a model xylose solution was similar to that achieved with 2.5 M NaCl. The liquid fraction of hot-water-pretreated rice straw was concentrated by using the FO membrane. The initial sugar concentration of 199 mM increased to 825 and 1612 mM after 48 and 72 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 48 h of FO concentration by xylose-fermenting recombinant Saccharomyces cerevisiae produced 17.7 g/L of ethanol after 24 h fermentation. Thus, the FO process has tremendous potential to up-concentrate sugars obtained from lignocellulosic biomass.
KW - Ethanol fermentation
KW - Forward osmosis
KW - Rice straw
KW - Sugar
UR - http://www.scopus.com/inward/record.url?scp=85011310442&partnerID=8YFLogxK
U2 - 10.1016/j.bej.2017.01.012
DO - 10.1016/j.bej.2017.01.012
M3 - Article
AN - SCOPUS:85011310442
SN - 1369-703X
VL - 121
SP - 13
EP - 16
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
ER -