Impact of physical structure of granular sludge on methanogenesis and methanogenic community structure.

ABSTRACT: Physical structures of sludge are critical factors determining the performance of the anaerobic digestion process, especially for the rate-limiting step, methanogenesis. Thus, to evaluate the effect of granular physical structure on methanogenesis and methanogenic community variation, intact and disintegrated granules were applied as inocula with formate, hydrogen and acetate as sole substrates in batch reactors. Kinetics results revealed that the physical structure of sludge had little impact on methane yield potential from three substrates, while a significantly different impact on methanogenesis rates of formate, hydrogen and acetate. The methanogenesis rate of formate in disintegrated granules was higher than that in the intact granular system, the methanogenesis rate of H₂/

SUBMITTER: Pan X 

PROVIDER: S-EPMC9116110 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature