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首页> 外文期刊>Bioprocess and Biosystems Engineering >Comparison of microbial community structures between mesophilic and thermophilic anaerobic digestion of vegetable waste
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Comparison of microbial community structures between mesophilic and thermophilic anaerobic digestion of vegetable waste

机译：植物废弃物中嗜热嗜热厌氧消化的微生物群落结构比较

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摘要

The anaerobic digestion performance correlates with the functional microbial community. Mesophilic and thermophilic digestions of vegetable waste were conducted, and dynamics of the microbial community were investigated. The mesophilic and thermophilic collapsed stages occurred at organic loading rates of 1.5 and 2.0 g VS/(L d) due to the accumulation of volatile fatty acids with final concentrations of 2276 and 6476 mg/L, respectively. A high concentration of volatile fatty acids caused the severe inhibition of methanogens, which finally led to the imbalance between acetogenesis and methanogenesis. The mesophilic digestion exhibited a higher microbial diversity and richness than the thermophilic digestion. Syntrophic acetate-oxidizing coupled with hydrogenotrophic methanogenesis was the dominant pathway in the thermophilic stable system, and acetoclastic methanogenesis in the mesophilic stable system. The dominant acidogens, syntrophus, and methanogens were unclassified_f__Anaerolineaceae (8.68%), Candidatus_Cloacamonas (19.70%), Methanosaeta (6.10%), and Methanosarcina (4.08%) in the mesophilic stable stage, and Anaerobaculum (12.59%), Syntrophaceticus (4.84%), Methanosarcina (30.58%), and Methanothermobacter (3.17%) in thermophilic stable stage. Spirochaetae and Thermotogae phyla were the characteristic microorganisms in the mesophilic and thermophilic collapsed stages, respectively. These findings provided valuable information for the deep understanding of the difference of the microbial community and methane-producing mechanism between mesophilic and thermophilic digestion of vegetable waste.
机译：厌氧消化性能与功能性微生物群落相关。进行培养和嗜热消化的蔬菜废物，并研究了微生物群落的动态。由于挥发性脂肪酸的恒定脂肪酸分别分别为2276和6476mg / L的恒定脂肪酸的积累，嗜苯胺和嗜热折叠阶段发生在1.5和2.0g / d d）的阶段。高浓度的挥发性脂肪酸导致对甲烷的严重抑制，这最终导致乙酰氨基和甲状腺发生之间的不平衡。嗜苯胺消化表现出比热嗜热消化更高的微生物多样性和丰富性。乙酸氧化氢化与氢脱氢性甲烷的氧化是嗜热稳定体系中的主要途径，嗜液稳定体系中的乙酰菌甲酸化。优势酸性酸化剂和甲烷酮是Unclassied_F_NANEROLINCEAE（8.68％），Candidatus_Cloacamonas（19.70％），甲蛋白酶（6.10％）和嗜嗜酸性稳定阶段的甲烷虫（4.08％），厌氧酸（12.59％），Syntrophacetcus（4.84％） ），嗜热稳定阶段的甲烷虫（30.58％）和甲烷热杆菌（3.17％）。 Spirochaetae和Thermotogae phyla分别是嗜苯胺和嗜热倒塌阶段的特征微生物。这些发现提供了有价值的信息，了解对植物废物中嗜热和嗜热消化之间的微生物群落和甲烷的机制差异的差异。

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  • 来源
    《Bioprocess and Biosystems Engineering》 |2021年第6期|1201-1214|共14页
  • 作者

    Ao Tianjie; Xie Zhijie; Zhou Pan; Liu Xiaofeng; Wan Liping; Li Dong;

  • 作者单位

    Chinese Acad Sci Chengdu Inst Biol Key Lab Environm & Appl Microbiol Environm Microbiol Key Lab Sichuan Prov Chengdu 610041 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Chengdu Inst Biol Key Lab Environm & Appl Microbiol Environm Microbiol Key Lab Sichuan Prov Chengdu 610041 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Chengdu Inst Biol Key Lab Environm & Appl Microbiol Environm Microbiol Key Lab Sichuan Prov Chengdu 610041 Peoples R China;

    Chinese Acad Sci Chengdu Inst Biol Key Lab Environm & Appl Microbiol Environm Microbiol Key Lab Sichuan Prov Chengdu 610041 Peoples R China;

    Jiangxi Zhenghe Ecol Agr Co Ltd Xinyu 338008 Peoples R China;

    Chinese Acad Sci Chengdu Inst Biol Key Lab Environm & Appl Microbiol Environm Microbiol Key Lab Sichuan Prov Chengdu 610041 Peoples R China|Jiangxi Zhenghe Ecol Agr Co Ltd Xinyu 338008 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Vegetable waste; Functional microbial community; Mesophilic anaerobic digestion; Thermophilic anaerobic digestion; Syntrophic acetate-oxidizing;

    机译：蔬菜废物;功能性微生物群落;嗜苯胺厌氧消化;嗜热厌氧消化;乙酸乙酸乙酸;

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