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首页> 外文期刊>Environmental Science & Technology >Utilization of CO_2 Fixating Bacterium Actinobacillus succinogenes 130Z for Simultaneous Biogas Upgrading and Biosuccinic Acid Production
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Utilization of CO_2 Fixating Bacterium Actinobacillus succinogenes 130Z for Simultaneous Biogas Upgrading and Biosuccinic Acid Production

机译：利用CO_2固定化细菌琥珀酸放线菌130Z同时提高沼气产量和生产琥珀酸

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摘要

Biogas is an attractive renewable energy carrier. However, it contains CO_2 which limits its use for certain applications. Here we report a novel approach for removing CO_2 from biogas and capturing it as a biochemical through a biological process. This approach entails converting CO_2 into biosuccinic add using the bacterial strain Actinobacillus succinogenes 130Z, and simultaneously producing high-purity CH_4 (＞ 95%). Results showed that when pressure during fermentation was increased from 101.325 to 140 kPa, higher CO_2 solubility was achieved, thereby positively affecting final succinic acid yield and titer, CO_2 consumption rate, and CH_4 purity. When using biogas as the only CO_2 source at 140 kPa, the CO_2 consumption rate corresponded to 2.59 L CO_2 L~(-1) d~(-1) with a final succinic acid titer of 14.4 g L~(-1). Under this pressure condition, the highest succinic acid yield and biogas quality reached corresponded to 0.635 g g~(-1) and 95.4% (v v~(-1)) CH_4 content, respectively, after 24 h fermentation. This work represents the first successful attempt to develop a system capable of upgrading biogas to vehicle fuel/ gas grid quality and simultaneously produce biosuccinic acid, a valuable building block with large market potential in the near term.
机译：沼气是一种有吸引力的可再生能源载体。但是，它包含CO_2，限制了其在某些应用中的使用。在这里，我们报告了一种从沼气中去除CO_2并将其作为生物化学物质通过生物过程捕获的新颖方法。这种方法需要使用细菌菌株琥珀酸放线杆菌130Z将CO_2转化为生物琥珀酸，同时生产高纯度CH_4（> 95％）。结果表明，当发酵过程中的压力从101.325增加到140 kPa时，CO_2的溶解度更高，从而对最终的琥珀酸产率和效价，CO_2消耗率和CH_4纯度产生积极影响。当使用沼气作为唯一的140kPa的CO_2源时，CO_2的消耗速率相当于2.59 L CO_2 L〜（-1）d〜（-1），最终琥珀酸滴度为14.4 g L〜（-1）。在此压力条件下，发酵24小时后，最高的琥珀酸产量和沼气质量分别达到0.635 g g〜（-1）和95.4％（v v〜（-1））CH_4含量。这项工作是开发能够将沼气升级至车辆燃料/燃气格栅质量并同时生产生物琥珀酸的系统的首次成功尝试，而生物琥珀酸是短期内具有巨大市场潜力的有价值的组成部分。

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  • 来源
    《Environmental Science & Technology》 |2014年第20期|12464-12468|共5页
  • 作者

    Ingolfur B. Gunnarsson; Merlin Alvarado-Morales; Irini Angelidaki;

  • 作者单位

    Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark;

    Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark;

    Department of Environmental Engineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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