(i) select iron-reducing bacteria from waste waters while anaerobically oxidizing organic matter and (ii) a current production three
times higher than the one obtained without the iron addition.
Additionally, Kim et al. (2005) previously tried to enrich mixed cultures
in DMRB to be further used as inoculum for BES. They conducted
enrichments of DMRB contained in sludge by exposing
certain amount of its biomass to a ferric iron medium. However,
neither the improvement in performance nor the successful
enrichment of DMRB were demonstrated.