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Comparison of various pretreatment methods for biohydrogen production from cornstalk

机译：玉米秸秆生产生物氢的各种预处理方法的比较

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摘要

To establish high-efficiency pretreatments of cornstalk (CS) for hydrogen fermentative production, various pretreatment strategies have been investigated and contrasted in this work. Five pretreatment methods, including acid-soaking pretreatment, base-soaking pretreatment, high-temperature-assisted acid pretreatment, high-temperature-assisted base pretreatment and ultrasonic-assisted acid pretreatment (UAP), were performed on CS. The results showed that UAP significantly promoted the hydrogen production by CS compared with other pretreatments. The optimum UAP process, pretreating substrate with ultrasonication in 2.0% sulfuric acid solution for 1.5 h at the liquid-solid ratio of 20:1, obtained the maximum specific hydrogen accumulation of 142.59 rnL g~(-1)-CS and an average hydrogen production rate of 17.03 mL g~(-1)-CS h~(-1). Furthermore, the scanning electron microscope analysis of CS samples supports the hydrogen production results as well. The present work demonstrates that UAP is an efficient and practical CS pretreatment for hydrogen production from agricultural waste straws.
机译：为了建立用于氢发酵生产的玉米秸秆（CS）的高效预处理，已对各种预处理策略进行了研究并进行了对比。在CS上进行了五种预处理方法，包括酸浸预处理，碱浸预处理，高温辅助酸预处理，高温辅助碱预处理和超声辅助酸预处理（UAP）。结果表明，与其他预处理相比，UAP显着促进了CS的产氢。最佳的UAP工艺是，在20％的液固比下，在2.0％的硫酸溶液中超声处理底物1.5小时，获得的最大比氢累积量为142.59 rnL g〜（-1）-CS和平均氢产量为17.03 mL g〜（-1）-CS h〜（-1）。此外，CS样品的扫描电子显微镜分析也支持制氢结果。目前的工作表明，UAP是一种用于农业废秸秆制氢的高效，实用的CS预处理方法。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2012年第7期|p.1239-1245|共7页
  • 作者

    Hui Wang; Zelun Zhi; Jian Wang; Shenghua Ma;

  • 作者单位

    Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China;

    Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China;

    Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China;

    Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry and Materials Science, Northwest University, Xi'an 710069, Shaanxi, People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    biohydrogen production; anaerobic fermentation; cornstalk; substrate pretreatment; activated sludge;

    机译：生物氢生产;厌氧发酵玉米秸基材预处理;活性污泥;

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