Addition of Conductive Materials to Support Syntrophic Microorganisms in Anaerobic Digestion

Syntrophy and interspecies electron transfer among different microbial groups occurs in anaerobic digestion, many papers recently reported their positive effect on biogas methane production. In this paper, we present the results of conductive material, i.e., graphene, PAC biochar addition 3.5 L batch experiments, analyzing production curve. A peculiar curve pattern occurred presence materials. Compared to respective controls, graphene produced a surplus 33%, 20% 8%. Microbial community molecular analysis showed that syntrophic microorganisms inoculum were stimulated by material addition. Graphene also appears promote an between Geobacter sp. ca. Methanofastidiosum. This paper contributes understanding DIET-related dynamic PAC, which could be exploited optimize real-scale applications.