Biochar enhanced thermophilic anaerobic digestion of food waste: Focusing on biochar particle size, microbial community analysis and pilot-scale application

2020 ◽  
Vol 209 ◽  
pp. 112654 ◽  
Author(s):  
Le Zhang ◽  
Ee Yang Lim ◽  
Kai-Chee Loh ◽  
Yong Sik Ok ◽  
Jonathan T.E. Lee ◽  
...  
Keyword(s):  
Particle Size ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Community Analysis ◽  
Pilot Scale ◽  
Microbial Community Analysis ◽  
Thermophilic Anaerobic Digestion

Hydrogen fermentation of food waste by alkali-shock pretreatment: Microbial community analysis and limitation of continuous operation

2015 ◽  
Vol 186 ◽  
pp. 215-222 ◽  
Author(s):  
Sujin Jang ◽  
Dong-Hoon Kim ◽  
Yeo-Myeong Yun ◽  
Mo-Kwon Lee ◽  
Chungman Moon ◽  
...  
Keyword(s):  
Microbial Community ◽  
Food Waste ◽  
Community Analysis ◽  
Continuous Operation ◽  
Microbial Community Analysis

scholarly journals Succession of microbial community in anaerobic digestion of dairy manure induced by manure-derived biochar

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Hyun Min Jang ◽  
Jeff Brady ◽  
Eunsung Kan
Keyword(s):  
Electron Transfer ◽  
Microbial Community ◽  
Anaerobic Digestion ◽  
Community Analysis ◽  
Dairy Manure ◽  
Microbial Community Analysis ◽  
Methane Yield ◽  
Lag Phase ◽  
Interspecies Electron Transfer ◽  
Syntrophic Bacteria

The present study investigates possible roles of manure-derived biochar (MBC) in anaerobic digestion (AD) of dairy manure. Addition of MBC led to an increase in cumulative methane yield and a decrease in lag phase under all tested conditions (concentration of MBC: 1 and 10 g/L, temperature: 20, 35 and 55°C). For example, the cumulative methane yield in the mesophilic AD with 10 g/L MBC were 24.51% higher than that of the AD without MBC. Additionally, lag phage of mesophilic AD with 10 g/L MBC decreased from 2.08 d to 1.52 d. Microbial community analysis indicated that the addition of MBC to mesophilic and thermophilic AD of dairy manure increased the relative abundance of <i>Ruminofilibacter</i> which related to the hydrolysis. In addition, the addition of MBC to AD potentially stimulated the growth of syntrophic bacteria (e.g., genera Clostridium, Syntrophomonas and Syntrophus) and hydrogenotrophic methanogens (e.g., genera <i>Methanobacterium, Methanolinea</i> and <i>Methanomassiliicoccus</i>). Furthermore, microbial community analysis also suggested that mediate interspecies electron transfer and direct interspecies electron transfer would be accelerated by addition of MBC which showed high electrical conductivity (3230 μS/cm).

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