Developing “precise-acting” strategies for improving anaerobic methanogenesis of organic waste: Insights from the electron transfer system of syntrophic partners

doi:10.1007/s11783-021-1508-1

Front. Environ. Sci. Eng.

2022, Vol. 16

Issue (6) : 74 https://doi.org/10.1007/s11783-021-1508-1

PERSPECTIVES

Developing “precise-acting” strategies for improving anaerobic methanogenesis of organic waste: Insights from the electron transfer system of syntrophic partners

Lei Li¹, Shijie Yuan¹, Chen Cai¹, Xiaohu Dai^1,²(

)

¹. State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
². Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China

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Abstract

Methanogenesis is the last step in anaerobic digestion, which is usually a rate-limiting step in the biological treatment of organic waste. The low methanogenesis efficiency (low methane production rate, low methane yield, low methane content) substantially limits the development of anaerobic digestion technology. Traditional pretreatment methods and bio-stimulation strategies have impacts on the entire anaerobic system and cannot directly enhance methanogenesis in a targeted manner, which was defined as “broad-acting” strategies in this perspective. Further, we discussed our opinion of methanogenesis process with insights from the electron transfer system of syntrophic partners and provided potential targeted enhancing strategy for high-efficiency electron transfer system. These “precise-acting” strategies are expected to achieve an efficient methanogenesis process and enhance the bio-energy recovery of organic waste.

Keywords Methanogenesis Anaerobic digestion Enhancing strategy Electron transfer Organic waste

Corresponding Author(s): Xiaohu Dai

Issue Date: 30 September 2021

Cite this article:

Lei Li,Shijie Yuan,Chen Cai, et al. Developing “precise-acting” strategies for improving anaerobic methanogenesis of organic waste: Insights from the electron transfer system of syntrophic partners[J]. Front. Environ. Sci. Eng., 2022, 16(6): 74.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-021-1508-1
https://academic.hep.com.cn/fese/EN/Y2022/V16/I6/74

Fig.1 Diagrammatic sketch of the evolution from “broad-acting” strategies to “precise-acting” strategies with different syntrophic methanogenesis efficiency (OW: organic waste).

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