Comparison of Co(II) reduction on three different cathodes of microbial electrolysis cells driven by Cu(II)-reduced microbial fuel cells under various cathode volume conditions

Electricity generation and bivalent copper reduction as a function of operation time and cathode electrode material in microbial fuel cells

“…The anodes were inoculated from the anodes of previous operating MFCs running on acetate for faster anodic biofilm acclimation [3,11,19,20]. The composite of anolyte was as previously described [21].…”

“…All the potentials reported in this study were in volts (V) units relative to a SHE. One-way ANOVA in SPSS 19.0 was used to analyze the differences among the data, and all of the data indicated significance levels of p < 0.05.…”

“…Impedance analysis were conducted at polarized conditions close to the MFC cathode operating potentials, which were −0.1 V and 0 V (vs. SHE, for different cathodes) over a frequency range of 100 kHz-to 10 mHz with a sinusoidal perturbation of 10 mV amplitude [19]. The equivalent circuit and detailed value of different resistances were obtained through Zsimpwin software and normalized to the projected area of the cathodes [23].…”

“…The compositions of cathode electrodes is listed in Table S1. The cathode materials were first mechanically polished with abrasive papers and then cleaned with ethanol and deionized water before their installation in the MFCs [19,20].…”

Bioelectrochemical metal recovery with microbial fuel cells

“…This number varies depending of the species involved in the redox processes. Shen et al (2015) and Wu et al (2015) showed V OC of 0.68V and 0.64V respectively and close to the thermodynamic equilibrium potential. By contrast, ter and Rodenas et al (2015) showed a V OC of 0.61V and 0.48V respectively, showing higher power and current densities and lower internal resistances.…”