Bioelectronic platforms for optimal bio-anode of bio-electrochemical systems: From nano- to macro scopes

Elimination of Power Overshoot at Bioanode through Assistance Current in Microbial Fuel Cells

“…Microbial fuel cells (MFCs)a re electrochemical devices with potential utilization asr enewable energy sources because of their ability to produce electricity from organicm atter through exoelectrogens (also referredt oe lectrochemically active bacteria (EAB), anode-respiring bacteria, and electricigens) that act as anodic catalysts. [1][2][3][4][5][6] An MFC system is ak ind of galvanic cell, and the successo fi ts operation is evaluated in terms of the amount of electricity produced. [1,2] The sustainable maximum power measurement method, which is used to ensure the productiono fs ustainable electricity,w as recently introduced by Menicucci et al [7] Since the advent of MFC research, electricity production by MFCs has been compared within MFC research groups as well as with other chemical fuel cells, based on current density (current) and power density (power).…”

“…[1][2][3][4][5][6] An MFC system is ak ind of galvanic cell, and the successo fi ts operation is evaluated in terms of the amount of electricity produced. [1,2] The sustainable maximum power measurement method, which is used to ensure the productiono fs ustainable electricity,w as recently introduced by Menicucci et al [7] Since the advent of MFC research, electricity production by MFCs has been compared within MFC research groups as well as with other chemical fuel cells, based on current density (current) and power density (power). [3][4][5][6] To compare the performance, these energy values are typically measured using discharge tests, in which the voltage and current are monitored as af unction of the resistance (manually) or voltage (by linear sweep voltammetry,LSV).…”

“…Allo ft he proposed causes of power overshoot are related to electron production and flow.F ull acclimation conditions that promote favorable adaptation of the cultures can produce electrons efficientlya tt he bioanode. [1,13,14] The substrate utilization rate depends on the kineties of electron production at the bioanode,e specially by EAB. [16,17] The internal resistance and conductivity can affect electron loss duringe lectron transfer.…”

Biofilm as a redox conductor: a systematic study of the moisture and temperature dependence of its electrical properties

“…18 In the other model, electrons are transported with metallic-like coherent conductivity through a network of protein filaments (pili) as occurs in organic metals, with conductivity of up to 10 3 mS cm À1 . 13,21,22 The hypothesis of metallic-like conduction of pili challenges the conventional notion of redox cofactor-based charge flow in biological systems, 6,8 whereas the hypothesis of redox conduction challenges the conventional notion that such a charge flow is limited to molecular scale distances and not the mm-scale distances for which it appears to occur in G. sulfurreducens biofilms. 14,15,18 The metal-like conduction model is based on proposed p-p stacking of aromatic residues of G. sulfurreducens pili.…”

Additive Manufacturing of a Microbial Fuel Cell—A detailed study

“…The influent COD (Chemical Oxygen Demand) of the solution continuously fed by syringe pump was 10.8 ± 0.3 g/L and the output was in the range 0.6–3.2 g/L, including some fluctuations according to the load impedance applied. The maximum COD removal obtained was 93 ± 2% obtained working at low resistances 47 and (100 Ohm). In average, COD removal was in the range 70–95%.…”