Figure 1

(A) Ethanol consumption and (B) succinate production with different types of biochar by a syntrophic co-culture of G. metallireducens and G. sulfurreducens. As control experiments we tested all different biochars with no cells, the co-culture without biochar and the co-culture with soluble components released from the biochar. The error bars represent standard deviations of the mean for triplicate cultures.