Response of sludge fermentation liquid and microbial community to nano zero-valent iron exposure in a mesophilic anaerobic digestion system

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24236-24244 ◽  
Author(s):  
Bao Yu ◽  
Xiaoting Huang ◽  
Dongling Zhang ◽  
Ziyang Lou ◽  
Haiping Yuan ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Zero Valent Iron ◽  
Hydrogenotrophic Methanogenesis ◽  
Fermentation Liquid ◽  
System P ◽  
Nano Zero Valent Iron ◽  
Hydrolysis Acidification

NZVI could promote hydrolysis-acidification, facilitate the release of biodegradable compounds and enrich hydrogenotrophic methanogenesis by Clostridia and Methanosarcina.

Enhancement of methanogenic activity in anaerobic digestion of high solids sludge by nano zero-valent iron

2020 ◽  
Vol 703 ◽  
pp. 135532 ◽  
Author(s):  
Jun Zhou ◽  
Xiaogang You ◽  
Baowei Niu ◽  
Xiaoqi Yang ◽  
Lei Gong ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Zero Valent Iron ◽  
High Solids ◽  
Methanogenic Activity ◽  
Nano Zero Valent Iron

scholarly journals Comparison of functional microbial profile between mesophilic and thermophilic anaerobic digestion of vegetable waste

2020 ◽  
Author(s):  
Tianjie Ao ◽  
Zhijie Xie ◽  
Pan Zhou ◽  
Xiaofeng Liu ◽  
Liping Wan ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Volatile Fatty Acids ◽  
Stable System ◽  
Microbial Consortia ◽  
Vegetable Waste ◽  
Microbial Profile ◽  
Hydrogenotrophic Methanogenesis ◽  
Highly Correlated ◽  
Stable Stage

Abstract Background With increasing accumulation of vegetable waste in China, the valorization of vegetable waste becomes an urgent concern. Based on the characteristics of high moisture content and biodegradable organic matter of vegetable waste, anaerobic digestion as an effective technique was selected to reuse this kind of agriculture waste. The anaerobic digestion performance is highly correlated with the functional microbial community. In this study, mesophilic and thermophilic digestions of vegetable waste were conducted, and dynamics of the microbial community were investigated. Results The mesophilic and thermophilic collapsed stages occurred at organic loading rates of 1.5 and 2.0 g volatile solid (VS)/(L·d), respectively, due to severe accumulation of volatile fatty acids. The mesophilic digestion exhibited a higher microbial diversity and richness than the thermophilic digestion. Syntrophic acetate-oxidizing coupled with hydrogenotrophic methanogenesis was the dominant pathway in the thermophilic stable system, and acetoclastic methanogenesis in the mesophilic stable system. The dominant acidogens, syntrophus, and methanogens were Candidatus_Cloacamonas, norank_f__Synergistaceae, Methanosaeta, and Methanosarcina in the mesophilic stable stage, and Anaerobaculum, Syntrophaceticus, Methanosarcina, and Methanothermobacter in thermophilic stable stage. Spirochaetae and Thermotogae phyla were the characteristic microorganisms in the mesophilic and thermophilic collapsed stages, respectively. Conclusions This study unveiled the distribution of the functional microbial consortia at the stable and collapsed periods of the anaerobic digestion of vegetable waste under mesophilic and thermophilic conditions to providing guidelines for the further research of anaerobic digestion of vegetable waste.

Hydrogen production from the dissolution of nano zero valent iron and its effect on anaerobic digestion

2016 ◽  
Vol 88 ◽  
pp. 475-480 ◽  
Author(s):  
Yu-Xi Huang ◽  
Jialiang Guo ◽  
Chunyang Zhang ◽  
Zhiqiang Hu
Keyword(s):  
Anaerobic Digestion ◽  
Hydrogen Production ◽  
Zero Valent Iron ◽  
Nano Zero Valent Iron
Sign in / Sign up

Export Citation Format

Share Document