Nickel Foam Promotes Syntrophic Metabolism of Propionate and Butyrate in Anaerobic Digestion.

ABSTRACT: Enhanced interspecies electron transfer (IET) among symbiotic microorganisms is an effective method to increase the rate of methane (CH₄) production in anaerobic digestion. Direct interspecies electron transfer (DIET), which does not involve dissolved redox media, is considered an alternative and superior method to enhance methane production by interspecific hydrogen (H₂) transfer (IHT). In this study, nickel foam was built into a semicontinuous anaerobic reactor to investigate its effect on the metabolism of propionate and butyrate. Both increased the average yield of CH₄ in anaerobic digestion by 18.1 and 15.9%, respectively. Analysis of bacterial and archaeal communities showed that the addition of nickel foam could increase the relative abundance of mic

SUBMITTER: Li X 

PROVIDER: S-EPMC8375088 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature