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Hydrolysis of hemicellulose from barley straw and enhanced enzymatic saccharification of cellulose using acidified zinc chloride

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  • Kim, Tae Hoon
  • Oh, Kyeong Keun
  • Ryu, Hyun Jin
  • Lee, Kyong-Hwan
  • Kim, Tae Hyun

Abstract

A chemical fractionation process using acidified zinc chloride (ZnCl2) was investigated to recover hemicellulose. The process variables of the fractionation process, including reaction temperature, reaction time, and ZnCl2 concentration, were selected as factors of the experimental design by preliminary tests. The optimal reaction conditions of these three factors for maximal xylose and mannose (XM) recovery yield and purity were determined by statistical experimental design and central composite design (CCD). The determined optimal conditions were 67.9 °C reaction temperature, 10.5 min reaction time, and 7.3% ZnCl2 concentration. The predicted maximum XM recovery yield and purity from the regression equation of dependent variable Y (XM yield) were 47.6% and 75.0% respectively. The experiment showed a 54.5% XM recovery and 72.7% purity under the optimal reaction condition.

Suggested Citation

  • Kim, Tae Hoon & Oh, Kyeong Keun & Ryu, Hyun Jin & Lee, Kyong-Hwan & Kim, Tae Hyun, 2014. "Hydrolysis of hemicellulose from barley straw and enhanced enzymatic saccharification of cellulose using acidified zinc chloride," Renewable Energy, Elsevier, vol. 65(C), pages 56-63.
    • Handle: RePEc:eee:renene:v:65:y:2014:i:c:p:56-63
    DOI: 10.1016/j.renene.2013.07.011
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    References listed on IDEAS

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    1. Choi, Chang Ho & Um, Byung Hwan & Kim, Young Soo & Oh, Kyeong Keun, 2013. "Improved enzyme efficiency of rapeseed straw through the two-stage fractionation process using sodium hydroxide and sulfuric acid," Applied Energy, Elsevier, vol. 102(C), pages 640-646.
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    Cited by:

    1. Hyun Jin Jung & Hyun Kwak & Jinyoung Chun & Kyeong Keun Oh, 2021. "Alkaline Fractionation and Subsequent Production of Nano-Structured Silica and Cellulose Nano-Fibrils for the Comprehensive Utilization of Rice Husk," Sustainability, MDPI, vol. 13(4), pages 1-18, February.
    2. Feng, Lu & Perschke, Yolanda Maria Lemes & Fontaine, Doline & Ward, Alastair James & Eriksen, Jørgen & Sørensen, Peter & Møller, Henrik Bjarne, 2019. "Co-ensiling of cover crops and barley straw for biogas production," Renewable Energy, Elsevier, vol. 142(C), pages 677-683.

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