Ferric iron enhances electricity generation by Shewanella oneidensis MR-1 in MFCs

Poly iron sulfate flocculant as an effective additive for improving the performance of microbial fuel cells

“…S3). A previous study has shown that ferric iron enhances electricity generation by Shewanella oneidensis in MFCs (Wu et al, 2013). Another study has reported that the addition with sulfate exerts beneficial effects on activated sludge-and leachate-treating MFCs (Ieropoulos et al, 2013).…”

“…In addition, several studies have attempted to supplement electrolytes in MFCs with additive materials that can stimulate the activity of exoelectrogens. To cite an instance, studies have shown that electricity generation from MFCs inoculated with Shewanella is accelerated by supplementing with small amounts of metals, such as iron (Wu et al, 2013) and copper (Xu et al, 2016). Another study has demonstrated beneficial effects of sulfur sources in activated sludge-and leachate-treating MFCs (Ieropoulos et al, 2013).…”

“…PIS has been widely used in wastewater-treatment plants for increasing the quality of treated water and promoting flocculation and precipitation of sludge (Mori and Takeda, 2003). We selected this flocculant, since positive effects of iron and sulfate on MFC performances have been reported (Wu et al, 2013;Ieropoulos et al, 2013). Electric outputs, effluent qualities and anode microbiomes were compared in MFCs in the presence and absence of PIS.…”

Theoretical exploration of optimal metabolic flux distributions for extracellular electron transfer by

“…Consequently, the MFC experimental studies often report the current density as current generated per unit area of the anode surface area (A/cm A recent study has reported a maximum current output of 11.09 ± 0.28 A/m 2 for an MR-1-based MFC, and a total biomass of the anode biofilm of 200.7 ± 2.8 mg (fresh weight)/cm 2 [40]. With these two values, we can translate the reported values into an estimated current output in the units of amperes per gram, 0.005525 A/g (fresh weight).…”

Investigation Concerning the Formation Process of Gold Nanoparticles by Shewanella oneidensis MR-1

“…Many applications using extracellular electron transfer have been reported concerning environmental and energy-creation biotechnologies, such as for the collection of precious metal ions, [1][2][3] radionuclides, 4 and biocatalyst in microbial fuel cells. 5,6 The electron carriers are mainly c-type cytochrome proteins, which are arranged on the bacterial inner/outer membrane. Electrons in the menaquinol pool flow to CymA at the inner membrane, and then to MtrA in the periplasmic space.…”