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The optimized CO_2-added ammonia explosion pretreatment for bioethanol production from rice straw

机译：优化的添加CO_2的氨气爆炸预处理，用于稻草生产生物乙醇

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摘要

A CO_2-added ammonia explosion pretreatment was performed for bioethanol production from rice straw. The pretreatment conditions, such as ammonia concentration, CO_2 loading level, residence time, and temperature were optimized using response surface methodology. The response for optimization was defined as the glucose conversion rate. The optimized pretreatment conditions resulting in maximal glucose yield (93.6 %) were determined as 14.3 % of ammonia concentration, 2.2 MPa of CO_2 loading level, 165.1 ℃ of temperature, and 69.8 min of residence time. Scanning electron microscopy analysis showed that pretreatment of rice straw strongly increased the surface area and pore size, thus increasing enzymatic accessibility for enzymatic saccharification. Finally, an ethanol yield of 97 % was achieved via simultaneous saccharification and fermentation. Thus, the present study suggests that CO_2-added ammonia pretreatment is an appropriate process for bioethanol production from rice straw.
机译：为了从稻草中生产生物乙醇，进行了添加CO_2的氨爆炸预处理。使用响应表面方法优化了预处理条件，例如氨浓度，CO_2负载水平，停留时间和温度。优化的响应定义为葡萄糖转化率。确定最佳的预处理条件，以达到最高的葡萄糖收率（93.6％），其条件是氨浓度为14.3％，CO_2负载水平为2.2 MPa，温度为165.1℃，停留时间为69.8分钟。扫描电子显微镜分析表明，稻草的预处理极大地增加了表面积和孔径，从而增加了酶促糖化的酶可及性。最终，通过同时糖化和发酵获得了97％的乙醇产率。因此，本研究表明添加CO 2的氨预处理是从稻草中生产生物乙醇的合适方法。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2014年第9期|1907-1915|共9页
  • 作者

    Young-Lok Cha; Jungwoo Yang; Jong-Woong Ahn; Youn-Ho Moon; Young-Mi Yoon; Gyeong-Dan Yu; Gi Hong An; In-Hu Choi;

  • 作者单位

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

    Bioenergy Crop Research Center, National Institute of Crop Science, Rural Development Administration, 199 Muan-ro, Cheonggye, Muan 534-833, South Korea;

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  • 正文语种 eng
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  • 关键词

    Lignocellulosic bioethanol; Pretreatment; Rice straw; Saccharification and fermentation; Response surface methodology;

    机译：木质纤维素生物乙醇;预处理;稻草;糖化和发酵;响应面方法;

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