| Title: | Microbial volatile organic compounds as novel indicators of anaerobic digestion instability: Potential and challenges |
| Author(s): | Nie E; He P; Peng W; Zhang H; Lu F; |
| Address: | "Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China. Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, People's Republic of China. Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, People's Republic of China. Electronic address: lvfan.rhodea@tongji.edu.cn" |
| DOI: | 10.1016/j.biotechadv.2023.108204 |
| ISSN/ISBN: | 1873-1899 (Electronic) 0734-9750 (Linking) |
| Abstract: | "The wide application of anaerobic digestion (AD) technology is limited by process fluctuations. Thus, process monitoring based on screening state parameters as early warning indicators (EWI) is a top priority for AD facilities. However, predicting anaerobic digester stability based on such indicators is difficult, and their threshold values are uncertain, case-specific, and sometimes produce conflicting results. Thus, new EWI should be proposed to integrate microbial and metabolic information. These microbial volatile organic compounds (mVOCs) including alkanes, alkenes, alkynes, aromatic compounds are produced by microorganisms (bacteria, archaea and fungi), which might serve as a promising diagnostic tool for environmental monitoring. Moreover, mVOCs diffuse in both gas and liquid phases and are considered the language of intra kingdom microbial interactions. Herein, we highlight the potential of mVOCs as EWI for AD process instability, including discussions regarding characteristics and sources of mVOCs as well as sampling and determination methods. Furthermore, existing challenges must be addressed, before mVOCs profiling can be used as an early warning system for diagnosing AD process instability, such as mVOCs sampling, analysis and identification. Finally, we discuss the potential biotechnology applications of mVOCs and approaches to overcome the challenges regarding their application" |
| Keywords: | *Volatile Organic Compounds Anaerobiosis Fungi Bacteria Archaea Anaerobic digestion Early warning indicators Microbial volatile organic compounds (mVOCs) Microorganism Process instability; |
| Notes: | "MedlineNie, Erqi He, Pinjing Peng, Wei Zhang, Hua Lu, Fan eng Research Support, Non-U.S. Gov't Review England 2023/06/26 Biotechnol Adv. 2023 Oct; 67:108204. doi: 10.1016/j.biotechadv.2023.108204. Epub 2023 Jun 24" |
