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Article

Links between Process Performance and Microbial Community of Pennisetum Hybrid Co-Digested with Municipal Solid Waste

by 1,2, 2,3, 2,4,5,*, 2,4,5,* and 1
1
School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
2
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
3
University of Chinese Academy of Sciences, Beijing 100049, China
4
CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
5
Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Attilio Converti
Energies 2021, 14(12), 3651; https://doi.org/10.3390/en14123651
Received: 14 April 2021 / Revised: 12 June 2021 / Accepted: 15 June 2021 / Published: 19 June 2021
In this study, the links between performance and microbial communities were investigated with municipal solid waste (MSW) at two feedstock ratios and eight organic loading rates (OLRs). The co-digestion systems were stably operated at OLRs of 2.0–6.0 g VS/(L·d). The performance of the co-digestion system varied with the feedstock ratio. Compared with the 50:50 (hybrid Pennisetum:MSW) system, the 75:50 system, GM31, obtained increases of 1.93–17.68% and 0.29–23.29% for the specific biogas and methane yields, respectively. Whereas a shift in bacterial and methanogen communities occurred as the operating conditions changed, particularly with OLR variations. The genera Saccharofermentans, Prevotella, Clostridium, Syntrophomonas, and Proteiniphilum became the dominant bacteria for the conversion of carbohydrates and nitrogen compounds as the OLR increased. Meanwhile, a shift from acetoclastic to hydrogenotrophic or multifunctional methanogens was observed. View Full-Text
Keywords: anaerobic digestion; municipal solid waste; Pennisetum hybrid; biogas yield; microbial community anaerobic digestion; municipal solid waste; Pennisetum hybrid; biogas yield; microbial community
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MDPI and ACS Style

Zhao, Q.; He, S.; Li, L.; Sun, Y.; Ren, H. Links between Process Performance and Microbial Community of Pennisetum Hybrid Co-Digested with Municipal Solid Waste. Energies 2021, 14, 3651. https://doi.org/10.3390/en14123651

AMA Style

Zhao Q, He S, Li L, Sun Y, Ren H. Links between Process Performance and Microbial Community of Pennisetum Hybrid Co-Digested with Municipal Solid Waste. Energies. 2021; 14(12):3651. https://doi.org/10.3390/en14123651

Chicago/Turabian Style

Zhao, Quanlin, Shuibin He, Lianhua Li, Yongming Sun, and Haiwei Ren. 2021. "Links between Process Performance and Microbial Community of Pennisetum Hybrid Co-Digested with Municipal Solid Waste" Energies 14, no. 12: 3651. https://doi.org/10.3390/en14123651

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