Effect of ammonia on anaerobic digestion: Focusing on energy flow and electron transfer
文献类型：期刊论文
| 作者 | Guo, Ying2; Xiao, Fan2; Yan, Miao1,2; Tang, Songbiao2; Duan, Zhenhan3; Sun, Yongming2; Li, Ying2 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 471页码:8 |
| 关键词 | Anaerobic digestion Ammonia Energy flow Gibbs free energy Electron transfer |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2023.144638 |
| 通讯作者 | Li, Ying(liying@ms.giec.ac.cn) |
| 英文摘要 | Ammonia inhibition often occurs during anaerobic digestion (AD) of N-rich organic waste. To decipher how ammonia affects microbial electron transfer activity and energy generation pathways, this study implemented mesophilic reactors subjected to incremental increase in ammonia concentrations from 600 to 5000 mg NH4+-N/L through urea regulation. The first comprehensive analyses of AD performance, mass and energy flow, thermodynamics, microbial communities, and metabolic activities were conducted in the digesters. The results showed that accumulation of volatile fatty acids, a reduction in methane production, and a mere 18.5% of the energy flow being directed towards biogas generation occurred under 4000 mg NH4+-N/L. Furthermore, we demonstrated that the changes in the Gibbs free energy were effective in evaluating the feasibility of propionic and butyric acid degradation under ammonia stress, but not for acetate. The alteration in microbial community composition indicated that the growth of acetogens surpassed that of methanogens under ammonia stress. Metagenomic analysis revealed a significant decrease in the abundance of genes associated with electron transfer and ATP generation, resulting in reduced efficiency in methanogenesis. Based on these findings, the supplementation of electrons via electro-fermentation into the AD system emerged as a potential approach to mitigate ammonia inhibition and enhance overall process efficiency. |
| WOS关键词 | INHIBITION ; TRANSPORT ; TOXICITY ; PH |
| 资助项目 | National Nature Science Foundation of China[52170143] ; Fundamental and Applied Basic Research Fund Project of Guangdong Province[2022A1515111019] ; Guangzhou Science and Technology Project[2021A1515012082] ; Youth Innovation Promotion Association, CAS |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001106278500001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Nature Science Foundation of China ; Fundamental and Applied Basic Research Fund Project of Guangdong Province ; Guangzhou Science and Technology Project ; Youth Innovation Promotion Association, CAS |
| 源URL | [http://ir.giec.ac.cn/handle/344007/40266]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Ying |
| 作者单位 | 1.Shandong Minhe Biotechnol Ltd Co, Yantai, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Minist Ecol & Environm MEE, South China Inst Environm Sci SCIES, Guangzhou 510655, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Ying,Xiao, Fan,Yan, Miao,et al. Effect of ammonia on anaerobic digestion: Focusing on energy flow and electron transfer[J]. CHEMICAL ENGINEERING JOURNAL,2023,471:8. |
| APA | Guo, Ying.,Xiao, Fan.,Yan, Miao.,Tang, Songbiao.,Duan, Zhenhan.,...&Li, Ying.(2023).Effect of ammonia on anaerobic digestion: Focusing on energy flow and electron transfer.CHEMICAL ENGINEERING JOURNAL,471,8. |
| MLA | Guo, Ying,et al."Effect of ammonia on anaerobic digestion: Focusing on energy flow and electron transfer".CHEMICAL ENGINEERING JOURNAL 471(2023):8. |
入库方式： OAI收割
来源：广州能源研究所
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