Similar Methanogenic Shift but Divergent Syntrophic Partners in Anaerobic Digesters Exposed to Direct versus Successive Ammonium Additions.

ABSTRACT: During anaerobic digestion (AD) of protein-rich wastewater, ammonium (NH₄⁺) is released by amino acid degradation. High NH₄⁺ concentrations disturb the AD microbiome balance, leading to process impairments. The sensitivity of the AD microbiome to NH₄⁺ and the inhibition threshold depend on multiple parameters, especially the previous microbial acclimation to ammonium stress. However, little is known about the effect of different NH₄⁺ acclimation strategies on the differential expression of key active microbial taxa. Here, we applied NH₄⁺ inputs of increasing intensity (from 1.7 to 15.2 g N-NH₄⁺ liters^-1) in batch assays fed with synthetic wastewater

SUBMITTER: Hardy J 

PROVIDER: S-EPMC8510171 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature