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首页> 外文期刊>Applied Energy >Simultaneous production of acetate and methane from glycerol by selective enrichment of hydrogenotrophic methanogens in extreme-thermophilic (70 degrees C) mixed culture fermentation
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Simultaneous production of acetate and methane from glycerol by selective enrichment of hydrogenotrophic methanogens in extreme-thermophilic (70 degrees C) mixed culture fermentation

机译：通过在极端嗜热（70摄氏度）混合培养发酵中选择性富集氢营养型产甲烷菌同时从甘油中生产乙酸盐和甲烷

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摘要

The feasibility of simultaneous production of acetate and methane from glycerol was investigated by selective enrichment of hydrogenotrophic methanogens in an extreme-thermophilic (70 degrees C) fermentation. Fed-batch experiments showed acetate was produced at the concentration up to 13.0 g/L. A stable operation of the continuous stirred tank reactor (CSTR) was reached within 100 days. Acetate accounted for more than 90 w/w% of metabolites in the fermentation liquid. The yields of methane and acetate were close to the theoretical yields with 0.74-0.80 mol-methane/mol-glycerol and 0.63-0.70 mol-acetate/mol-glycerol. The obtained microbial community was characterized. Hydrogenotrophic methanogens, mainly Methanothermobacter thermautotrophicus formed 93% of the methanogenogenic community. This confirms that a high temperature (70 degrees C) could effectively select for hydrogenotrophic methanogenic archaea. Thermoanaerobacter spp. was the main bacterium forming 91.5% of the bacterial population. This work demonstrated the conversion of the byproduct of biodiesel production, glycerol, to acetate as a chemical and biogas for energy generation. (C) 2015 Elsevier Ltd. All rights reserved.
机译：通过在极端嗜热（70摄氏度）发酵中选择性富集氢营养型产甲烷菌，研究了从甘油同时生产乙酸盐和甲烷的可行性。分批补料实验表明，乙酸盐的生产浓度高达13.0 g / L。连续搅拌釜反应器（CSTR）在100天内达到稳定运行。乙酸盐占发酵液中代谢产物的90 w / w％以上。甲烷和乙酸酯的产率接近于理论产率，其中0.74-0.80mol-甲烷/ mol-甘油和0.63-0.70mol-乙酸酯/ mol-甘油。表征获得的微生物群落。氢营养型产甲烷菌，主要是嗜热自生甲烷杆菌，构成了产甲烷菌群落的93％。这证实了高温（70摄氏度）可以有效地选择氢营养型产甲烷古菌。嗜热厌氧杆菌属。细菌是构成细菌种群的91.5％的主要细菌。这项工作证明了生物柴油生产的副产品甘油转化为乙酸盐，作为化学和沼气用于发电。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Applied Energy》 |2015年第15期|326-333|共8页
  • 作者

    Zhang Fang; Zhang Yan; Chen Yun; Dai Kun; van Loosdrecht Mark C. M.; Zeng Raymond J.;

  • 作者单位

    Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Anhui, Peoples R China|Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Herts, Peoples R China;

    Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Anhui, Peoples R China;

    Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Anhui, Peoples R China;

    Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Herts, Peoples R China;

    Delft Univ Technol, Dept Biotechnol, NL-2628 BC Delft, Netherlands;

    Univ Sci & Technol China, Dept Chem, CAS Key Lab Urban Pollutant Convers, Hefei 230026, Anhui, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Extreme thermophilic; Mixed culture fermentation; Glycerol; Acetate; Methane; Hydrogenotrophic methanogens;

    机译：极高温;混合培养;甘油;乙酸盐;甲烷;氢营养型产甲烷菌;

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