Linkage of community composition and function over short response time in anaerobic digestion systems with food fermentation wastewater

iScience

Jianyao Kong¹  Tim Finnigan²  Mingxing Zhao³  David Stuckey⁴  Miao Guo⁵  Silvio Riggio⁶  Weiwei Cai⁷ 

[1] Corresponding author;Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK;Department of Engineering, King's College London, London WC2R 2LS, UK;School of Environment and Civil Engineering, Jiangnan University, Wuxi, Jiangsu Province, China;Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK;Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK;School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China;

关键词: Biological sciences;    Biomass;    Biotechnology;    Chemical engineering;    Microbiology;   

DOI  :  

来源: DOAJ

【 摘 要 】

Summary: We investigated the short-term dynamics of microbial composition and function in bioreactors with inocula collected from full-scale and laboratory-based anaerobic digestion (AD) systems. The Bray-Curtis dissimilarity of both inocula was approximately 10% of the predicted Kyoto Encyclopedia of Genes and Genomes pathway and 40% of the taxonomic composition and yet resulted in a similar performance in methane production, implying that the variation of community composition may be decoupled from performance. However, the significant correlation of volatile fatty acids with taxonomic variation suggested that the pathways of AD could be different because of the varying genus. The predicted function of the significantly varying genus was mostly related to fermentation, which strengthened the conclusion that most microbial variation occurred within the fermentative species and led to alternative routes to result in similar methane production in methanogenic bioreactors. This finding sheds some light on the understanding of AD community regulation, which depends on the aims to recover intermediates or methane.

【 授权许可】

Unknown