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Pretreatment of rapeseed straw by soaking in aqueous ammonia

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Abstract

Pretreatment of lignocellulosic biomass has gained attention for production of biofuels. In this study, pretreatment by soaking in aqueous ammonia was adopted for pretreatment of biomass for ethanol production. A central composite design of response surface methodology was used for optimization of the pretreatment condition of rapeseed straw, with respect to catalyst concentration, pretreatment time, and pretreatment temperature. The most optimal condition for pretreatment of rapeseed straw by soaking in aqueous ammonia was 19.8% of ammonia water, 14.2 h of pretreatment time, and a pretreatment temperature of 69.0 °C. Using these optimal factor values under experimental conditions, 60.7% of theoretical glucose was obtained, and this value was well within the range predicted by the model. SEM results showed that SAA pretreatment of rapeseed straw resulted in increased surface area and pore size, as well as enhanced enzymatic digestibility.

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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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Authors and Affiliations

  1. School of Biological Sciences and Technology, Gwangju, 500-757, Korea

    Kyeong Eop Kang, Changshin Sunwoo & Don-Hee Park

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

    Kyeong Eop Kang, Changshin Sunwoo & Don-Hee Park

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

    Don-Hee Park

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

    Gwi-Taek Jeong

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  1. Kyeong Eop Kang
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  2. Gwi-Taek Jeong
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  3. Changshin Sunwoo
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  4. Don-Hee Park
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Correspondence to Don-Hee Park.

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Kang, K.E., Jeong, GT., Sunwoo, C. et al. Pretreatment of rapeseed straw by soaking in aqueous ammonia. Bioprocess Biosyst Eng 35, 77–84 (2012). https://doi.org/10.1007/s00449-011-0606-z

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  • DOI: https://doi.org/10.1007/s00449-011-0606-z

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