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Pretreatment of rapeseed straw by sodium hydroxide

Bioprocess and Biosystems Engineering volume 35, pages 705–713 (2012)Cite this article

Abstract

Pretreatment method for rapeseed straw by sodium hydroxide was investigated for production of bioethanol and biobutanol. Various pretreatment parameters, including temperature, time, and sodium hydroxide concentration were optimized using a statistical method which is a central composite design of response surface methodology. In the case of sodium hydroxide pretreatment, optimal pretreatment conditions were found to be 7.9% sodium hydroxide concentration, 5.5 h of reaction time, and 68.4 °C of reaction temperature. The maximum glucose yield which can be recovered by enzymatic hydrolysis at the optimum conditions was 95.7% and the experimental result was 94.0 ± 4.8%. This experimental result was in agreement with the model prediction. An increase of surface area and pore size in pretreated rapeseed straw by sodium hydroxide pretreatment was observed by scanning electron microscope.

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Acknowledgments

This work is the outcome of the fostering project of the Specialized Graduate School, which is financially supported by the Ministry of Knowledge Economy.

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Affiliations

  1. School of Biological Sciences and Technology, Chonnam National University, Gwangju, 500-757, South Korea

    Kyeong Eop Kang & Don-Hee Park

  2. Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, Chonnam National University, Gwangju, 500-757, South Korea

    Kyeong Eop Kang & Don-Hee Park

  3. Research Institute for Catalysis, Chonnam National University, Gwangju, 500-757, South Korea

    Don-Hee Park

  4. Department of Biotechnology, Pukyong National University, Busan, 608-737, South Korea

    Gwi-Taek Jeong

Authors
  1. Kyeong Eop Kang
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  2. Gwi-Taek Jeong
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  3. Don-Hee Park
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Corresponding author

Correspondence to Don-Hee Park.

Additional information

K. E. Kang and G.-T. Jeong have contributed equally to this work.

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Kang, K.E., Jeong, GT. & Park, DH. Pretreatment of rapeseed straw by sodium hydroxide. Bioprocess Biosyst Eng 35, 705–713 (2012). https://doi.org/10.1007/s00449-011-0650-8

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  • DOI: https://doi.org/10.1007/s00449-011-0650-8

Keywords

  • Rapeseed straw
  • Sodium hydroxide
  • Pretreatment
  • Optimization
  • Response surface methodology