Insight into the mechanisms of methane production enhancement by bioaugmentation with H2/CO2 in anaerobic digestion
文献类型： 外文期刊
作者： Yang, Jiancheng 1 ; Yang, Haojun 5 ; Xing, Tao 1 ; Sun, Yongming 1 ; Qu, Bin 4 ; Li, Lianhua 1 ; Li, Ying 1 ; Guo, Ying 1 ; Zhen, Feng 1 ; Pang, Yuwan 2 ;
作者机构： 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
4.Northeast Agr Univ, Coll Arts & Sci, Harbin 150030, Peoples R China
5.Guangdong Inst Modern Agr Equipment, Guangzhou 510630, Peoples R China
关键词： Hydrogenotrophic methanogens; Molar ratios; Domestication; Microbial community
期刊名称：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY （ 影响因子：8.3； 五年影响因子：7.7 ）
ISSN： 0360-3199
年卷期： 2025 年 113 卷
页码：
收录情况： SCI
摘要： In this study, the high performance hydrogenotrophic methanogenic bacteria were domesticated at different H2/ CO2 molar ratios, and the influence of the addition of high performance hydrogenotrophic methanogenic bacteria on the methanogenic performance of the anaerobic digestion (AD) system and the change of microbial community structure were investigated. 16s rDNA showed that Methanobrevibacter was the dominant methanogenic bacterium at different methane production experiment results showed H2/CO2 molar ratios, and the maximum cumulative methane production of 220.87 +/- 6.55 mL/g VS was obtained in the bioaugmentation experiments when using a domesticating agent with an H2/CO2 molar ratio of 4. In addition, the domesticating agent enhanced the hydrolysis and acidification steps, and changed the microbial community structure. This study demonstrated the potential of different H2/CO2 molar ratios for the domestication of high-performance hydrogen-based methanogenic bacteria.It would lay the foundation for the development of high-load anaerobic digestion in the future, and had great significance for the efficient and stable operation of biogas and biogas engineering.
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