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Hot Water Pretreatment of Boreal Aspen Woodchips in a Pilot Scale Digester

Author

Listed:
  • Jipeng Yan

    (Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, USA)

  • Shijie Liu

    (Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, 1 Forestry Drive, Syracuse, NY 13210, USA)

Abstract

Hot water extraction of aspen woodchips was treated at about 160 °C for 2 h with a liquor-to-solid ratio of 4.76:1 in a 1.84 m 3 batch reactor with external liquor circulation. Both five-carbon and six-carbon sugars are obtained in the extraction liquor. Xylose and xylooligomers are the main five-carbon sugar in the hot water extract, which reached a maximum concentration of 0.016 mol/L, and 0.018 mol/L, respectively. Minor monosaccharides including galactose, mannose, rhamnose, glucose, and arabinose are also obtained during the hot water extraction. Rhamnose is the main six-carbon sugar in the extraction liquor, which has a maximum concentration of 0.0042 mol/L. The variations of acetyl groups and formic acid are investigated due to their catalytic effect on the extraction reactions. Zeroth-order kinetics models are found to be adequate in describing the dissolved solids, acids, xylose, and xylooligomers.

Suggested Citation

  • Jipeng Yan & Shijie Liu, 2015. "Hot Water Pretreatment of Boreal Aspen Woodchips in a Pilot Scale Digester," Energies, MDPI, vol. 8(2), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:2:p:1166-1180:d:45430
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    Cited by:

    1. Chinmay V. Kurambhatti & Deepak Kumar & Kent D. Rausch & Mike E. Tumbleson & Vijay Singh, 2018. "Ethanol Production from Corn Fiber Separated after Liquefaction in the Dry Grind Process," Energies, MDPI, vol. 11(11), pages 1-12, October.

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