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

Author

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  • Tae Hoon Kim

    (R&D Center, SugarEn Co., Ltd., Yongin, Gyeonggi-do 16890, Korea
    Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, Gyeonggi-do 15588, 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
    Department of Chemical Engineering, Dankook University, Youngin, Gyeonggi-do 16890, Korea)

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.

Suggested Citation

  • Tae Hoon Kim & Hyun Jin Ryu & Kyeong Keun Oh, 2019. "Improvement of Organosolv Fractionation Performance for Rice Husk through a Low Acid-Catalyzation," Energies, MDPI, vol. 12(9), pages 1-11, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1800-:d:230400
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    References listed on IDEAS

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    1. Tae Hoon Kim & Dongjoong Im & Kyeong Keun Oh & Tae Hyun Kim, 2018. "Effects of Organosolv Pretreatment Using Temperature-Controlled Bench-Scale Ball Milling on Enzymatic Saccharification of Miscanthus × giganteus," Energies, MDPI, vol. 11(10), pages 1-13, October.
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    Cited by:

    1. Tae Hoon Kim & Hyun Kwak & Tae Hyun Kim & Kyeong Keun Oh, 2021. "Reaction Characteristics of Organosolv-Fractionation Process for Selective Extraction of Carbohydrates and Lignin from Rice Husks," Energies, MDPI, vol. 14(3), pages 1-14, January.
    2. Jinyoung Chun & Jin Hyung Lee, 2020. "Recent Progress on the Development of Engineered Silica Particles Derived from Rice Husk," Sustainability, MDPI, vol. 12(24), pages 1-19, December.

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