Characteristics of the MFC after the first batch
fermentation After 14 days of fermentation, the electrodes
were disconnected from the external resistance, and the MFC was
incubated until the OCV became almost constant. The OCV of the
MFC reached a constant value of 0.420 V, larger than the value
detected before fermentation. The ieV relationship for the MFC
setup after the first batch fermentation was subsequently
measured (Fig. 3). The maximum current density (16.3 mA/cm2)
and power density [1.87 mW/cm2 (at 6.67 mA/cm2)] were also