An integrated evaluation strategy for anaerobic digestion monitoring based on acid-base balance and thermodynamics of volatile fatty acid degradation
文献类型：期刊论文
| 作者 | Wu, Di3,4; Liu, Huiliang2,3; Xing, Tao2,3; Xiao, Fan1,3; Liu, Yuan2,4; Zhen, Feng4; Sun, Yongming |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2024-04-15 |
| 卷号 | 486页码:10 |
| 关键词 | Anaerobic digestion Process monitoring Early warning Acid-base balance Thermodynamics |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2024.150340 |
| 通讯作者 | Liu, Yuan(liuhuiliang1992@163.com) ; Zhen, Feng(zhenfeng@ms.giec.ac.cn) |
| 英文摘要 | Process monitoring is a top priority for anaerobic digestion (AD), yet it poses a significant challenge due to its inherent inaccuracies and case-specific nature in diagnosing reactor status. Herein, a long-term instability simulation experiment using lignocellulosic biomass was conducted with varying organic loading rate (OLR) and hydraulic retention time (HRT) levels. The increase in OLR (0.75 to 20 kg VS m(-3).d(-1)) and decrease in HRT (20 to 4 d) led to substantial total volatile fatty acids (TVFA) accumulation (>14 g/L) with a concomitant decrease in methane yield and organics removal. Full processing capacity with considerable conversion efficiency at four steps (hydrolysis: 60.43 +/- 2.82 %, acidogenesis: 56.13 +/- 3.27 %, acetogenesis: 56.03 +/- 3.31 %, methanogenesis: 55.93 +/- 3.32 %) and optimal methane yield (3.13 +/- 0.17 L/(L.d)) was achieved at an OLR of 18 Kg VS.m(-3).d(-1) and HRT of 4 days. An integrated evaluation strategy for AD process stability is proposed based on the acid-base balance and thermodynamics of VFA degradation. Propionate, iso-valerate, TVFA/bicarbonate alkalinity (BA), and BA/total alkalinity (TA) were identified as potential auxiliary indicators for diagnosing AD imbalances, while Delta G for propionate and valerate degradation served as the early warning signs. To enhance the efficacy and universality of early warnings, relative variations for acid-base indicators based on steady-state (similar to 15 %) and the absolute threshold value for Delta G(Propionate) (-40 KJ/mol) and Delta(Valerate) (-55 KJ/mol) were adopted. This approach integrates considerations for microbial adaption, thereby enhancing an assessment of whether a given signal reflects irreversible acidification or is merely a temporary fluctuation induced by reversible acidification. The proposed strategy enables a reliable and accurate early warning, holding great promise for practical applications. |
| WOS关键词 | SYNTROPHIC ACETATE OXIDATION ; GRASS-SILAGE ; OPERATING STRATEGIES ; BIOGAS PRODUCTION ; MONO-DIGESTION ; CO-DIGESTION ; FOOD WASTE ; SYSTEM ; PERFORMANCE ; INHIBITION |
| 资助项目 | National Natural Science Foundation of China[52122007] ; National Natural Science Foundation of China[51978641] ; National Natural Science Foundation of China[52300179] ; National Natural Science Foundation of China[52131003] ; National Natural Science Foundation of China[52327813] ; The 42307111Chongqing Natural Science Fund for Distinguished Young Scholars[CSTB2022NSCQ-JQX0003] ; Postdoctoral Natural Science Foundation of Chongqing[CSTB2023NSCQBHX0171] ; Outstanding Scientist of Chongqing Talent Plan[CQYC20210101288/CQYC202101006] ; Postdoctoral Innovation of Chongqing Talents Support Program ; Key R & D project of Heilongjiang Province[GY2021ZB0253/GA21D009] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001219112000001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; The 42307111Chongqing Natural Science Fund for Distinguished Young Scholars ; Postdoctoral Natural Science Foundation of Chongqing ; Outstanding Scientist of Chongqing Talent Plan ; Postdoctoral Innovation of Chongqing Talents Support Program ; Key R & D project of Heilongjiang Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41777]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Liu, Yuan; Zhen, Feng |
| 作者单位 | 1.Gifu Univ, Environm & Renewable Energy Syst, Gifu, Japan 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Di,Liu, Huiliang,Xing, Tao,et al. An integrated evaluation strategy for anaerobic digestion monitoring based on acid-base balance and thermodynamics of volatile fatty acid degradation[J]. CHEMICAL ENGINEERING JOURNAL,2024,486:10. |
| APA | Wu, Di.,Liu, Huiliang.,Xing, Tao.,Xiao, Fan.,Liu, Yuan.,...&Sun, Yongming.(2024).An integrated evaluation strategy for anaerobic digestion monitoring based on acid-base balance and thermodynamics of volatile fatty acid degradation.CHEMICAL ENGINEERING JOURNAL,486,10. |
| MLA | Wu, Di,et al."An integrated evaluation strategy for anaerobic digestion monitoring based on acid-base balance and thermodynamics of volatile fatty acid degradation".CHEMICAL ENGINEERING JOURNAL 486(2024):10. |
入库方式： OAI收割
来源：广州能源研究所
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