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

Tae Hoon Kim, Hyun Jin Ryu and Kyeong Keun Oh
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Tae Hoon Kim: R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi-do 16890, Korea
Hyun Jin Ryu: R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi-do 16890, Korea
Kyeong Keun Oh: R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi-do 16890, Korea

Energies, 2019, vol. 12, issue 9, 1-11

Abstract: 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.

Keywords: biomass; xylan; lignin; cellulose; pretreatment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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