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Analysis of particle size reduction on overall surface area and enzymatic hydrolysis yield of corn stover

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Abstract

Particle size of lignocellulose materials is an important factor for enzymatic hydrolysis efficiency. In this study, corn stover was milled and sieved into different size fractions from 1.42, 0.69, 0.34, to 0.21 mm, and the corresponding enzymatic hydrolysis yields were 24.69, 23.96, 25.34, and 26.97 %, respectively. The results indicate that the hydrolysis yield is approximately constant with changing corn stover particle sizes in the experimental range. The overall surface area and the inner pore size measurement show that the overall specific surface area was less than 2 % with the half reduction of particle size due to the greater inner pore surface area. The scanning electron microscope photographs gave direct evidence of the much greater inner pore surface area of corn stover particles. This result provided a reference when a proper size reduction of lignocellulose materials is considered in biorefining operations.

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Acknowledgments

This research was supported by the Joint Training Program of Shanghai High School and ECUST, and the National Basic Research Program of China (2011CB707406), and the National High-Tech Program of China (2012AA022301/2014AA021901).

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Authors and Affiliations

  1. State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

    Hanjie Li, Chenlin Ye, Ke Liu, Hanqi Gu & Jie Bao

  2. Shanghai High School, 400 Shangzhong Road, Shanghai, 200231, China

    Hanjie Li, Chenlin Ye & Weitao Du

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  1. Hanjie Li
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  2. Chenlin Ye
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  3. Ke Liu
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  4. Hanqi Gu
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  5. Weitao Du
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  6. Jie Bao
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Corresponding author

Correspondence to Jie Bao.

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H. Li, C. Ye and K. Liu have contributed equally to this work.

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Li, H., Ye, C., Liu, K. et al. Analysis of particle size reduction on overall surface area and enzymatic hydrolysis yield of corn stover. Bioprocess Biosyst Eng 38, 149–154 (2015). https://doi.org/10.1007/s00449-014-1253-y

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  • DOI: https://doi.org/10.1007/s00449-014-1253-y

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