Size Shapes the Active Microbiome of Methanogenic Granules, Corroborating a Biofilm Life Cycle.

ABSTRACT: Methanogenic archaea are key players in cycling organic matter in nature but also in engineered waste treatment systems, where they generate methane, which can be used as a renewable energy source. In such systems in the built environment, complex methanogenic consortia are known to aggregate into highly organized, spherical granular biofilms comprising the interdependent microbial trophic groups mediating the successive stages of the anaerobic digestion (AD) process. This study separated methanogenic granules into a range of discrete size fractions, hypothesizing different biofilm growth stages, and separately supplied each with specific substrates to stimulate the activity of key AD trophic groups, including syntrophic acid oxidizers and methanogens. Rates of specific methanogenic activi

SUBMITTER: Trego AC 

PROVIDER: S-EPMC7527134 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature