Metabolic Adaptation of Methanogens in Anaerobic Digesters Upon Trace Element Limitation.

ABSTRACT: Anaerobic digestion (AD) is a complex multi-stage process relying on the activity of highly diverse microbial communities including hydrolytic, acidogenic and syntrophic acetogenic bacteria as well as methanogenic archaea. The lower diversity of methanogenic archaea compared to the bacterial groups involved in AD and the corresponding lack of functional redundancy cause a stronger susceptibility of methanogenesis to unfavorable process conditions such as trace element (TE) deprivation, thus controlling the stability of the overall process. Here, we investigated the effects of a slowly increasing TE deficit on the methanogenic community function in a semi-continuous biogas process. The aim of the study was to understand how methanogens in digester communities cope with TE limitation and sus

SUBMITTER: Wintsche B 

PROVIDER: S-EPMC5859356 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature