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Open AccessFeature PaperArticle

Improvement of Organosolv Fractionation Performance for Rice Husk through a Low Acid-Catalyzation

1
R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi-do 16890, Korea
2
Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, Korea
3
Department of Chemical Engineering, Dankook University, Youngin, Gyeonggi-do 16890, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(9), 1800; https://doi.org/10.3390/en12091800
Received: 18 April 2019 / Revised: 8 May 2019 / Accepted: 9 May 2019 / Published: 11 May 2019
For the effective utilization of rice husk, organosolv fractionation was investigated to separate three main components (glucan, xylose, and lignin) with low acid concentration. Reaction temperatures of 170–190 °C, ethanol concentrations of 50%–70% (v/v), and sulfuric acid concentrations of 0%–0.7% (w/v) were investigated, with the reaction time and liquid-to-solid ratio kept constant at 60 min and 10, respectively. The fractionation conditions for the efficient separation into the three components of rice husk were determined to be 180 °C, 60% (v/v) of ethanol, and 0.25% (w/v) of sulfuric acid. Under these fractionation conditions, 86.8% of the xylan and 77.5% of the lignin were removed from the rice husk, and xylose and lignin were obtained from the liquid in 67.6% and 49.8% yields, respectively. The glucan digestibility of the fractionated rice husk was 85.2% with an enzyme loading of 15 FPU (filter paper unit) of cellulase per g-glucan. View Full-Text
Keywords: biomass; xylan; lignin; cellulose; pretreatment biomass; xylan; lignin; cellulose; pretreatment
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Kim, T.H.; Ryu, H.J.; Oh, K.K. Improvement of Organosolv Fractionation Performance for Rice Husk through a Low Acid-Catalyzation. Energies 2019, 12, 1800.

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