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首页> 外文期刊>RSC Advances >A clean and effective potassium hydroxide pretreatment of corncob residue for the enhancement of enzymatic hydrolysis at high solids loading
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A clean and effective potassium hydroxide pretreatment of corncob residue for the enhancement of enzymatic hydrolysis at high solids loading

机译：玉米饼残留物的清洁有效的氢氧化钾预处理，用于高固固体加载酶水解的增强

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摘要

Corncob residue (CCR) is an economic feedstock with enormous potential for the production of bioethanol. In this work, potassium hydroxide (KOH) pretreatment of CCR was investigated under relatively mild conditions, and the effectiveness of KOH pretreatment was evaluated by enzymatic saccharification at high solid loading. Results showed that after KOH pretreatment (16 wt% KOH dosage at 70 degrees C for 90 min) and the enzymatic hydrolysis at 20% solids loading and 20 FPU g(-1)-substrate of cellulase loading, the glucose yield could reach up to about 91%, which was over 90% higher compared to the raw CCR without KOH pretreatment. Correspondingly, about 89% of lignin and 79% of extractives were removed after KOH pretreatment. In addition, the spent liquor of KOH pretreatment containing sylvite could be used as lignin-based fertilizer based on the concept of biorefinery. In this case, the entire process for the production of fermentable sugars was clean and sustainable, which is very vital for the conversion of lignocelluloses to bioenergy or chemicals.
机译：玉米饼残留物（CCR）是一种经济原料，具有巨大潜力的生物乙醇。在这项工作中，在相对温和的条件下研究了CCR的氢氧化钾（KOH）预处理，并通过高固体载荷的酶糖化评估了KOH预处理的有效性。结果表明，在KOH预处理（70℃下的16wt％KOH剂量为90分钟）和20％固体加载的酶水解和纤维素酶负载的20％（-1） - 纤维素酶负荷，葡萄糖产量可以达到与未经KOH预处理的原始CCR相比，大约91％超过90％超过90％。相应地，在KOH预处理后，约89％的木质素和79％的提取物除去。此外，含有Syllvite的KOH预处理的废液可基于生物颗粒的概念用作木质素的肥料。在这种情况下，生产可发酵糖的整个方法是干净和可持续的，这对于将木质纤维素转化为生物能量或化学物质来说非常重要。

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  • 来源
    《RSC Advances》 |2019年第20期|共9页
  • 作者

    Chi Xuewen; Liu Chao; Bi Yan-Hong; Yu Guang; Zhang Yuedong; Wang Zhaoyu; Li Bin; Cui Qiu;

  • 作者单位

    Huaiyin Inst Technol Sch Life Sci &

    Food Engn Huaian 223003 Jiangsu Peoples R China;

    Chinese Acad Sci CAS Key Lab Biofuels CAS Key Lab Biobased Mat Dalian Natl Lab Clean Energy Qingdao Inst Bioener Qingdao 266101 Shandong Peoples R China;

    Huaiyin Inst Technol Sch Life Sci &

    Food Engn Huaian 223003 Jiangsu Peoples R China;

    Chinese Acad Sci CAS Key Lab Biofuels CAS Key Lab Biobased Mat Dalian Natl Lab Clean Energy Qingdao Inst Bioener Qingdao 266101 Shandong Peoples R China;

    Chinese Acad Sci CAS Key Lab Biofuels CAS Key Lab Biobased Mat Dalian Natl Lab Clean Energy Qingdao Inst Bioener Qingdao 266101 Shandong Peoples R China;

    Huaiyin Inst Technol Sch Life Sci &

    Food Engn Huaian 223003 Jiangsu Peoples R China;

    Chinese Acad Sci CAS Key Lab Biofuels CAS Key Lab Biobased Mat Dalian Natl Lab Clean Energy Qingdao Inst Bioener Qingdao 266101 Shandong Peoples R China;

    Chinese Acad Sci CAS Key Lab Biofuels CAS Key Lab Biobased Mat Dalian Natl Lab Clean Energy Qingdao Inst Bioener Qingdao 266101 Shandong Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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