Heavy metal recovery combined with H2 production from artificial acid mine drainage using the microbial electrolysis cell

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

“…−0.30 V for acetate under standard conditions vs. SHE) in the anolyte [4]. MFCs with various operating volumes and experimental conditions, as well as different architectures, have been explored for more efficient Cu(II) reduction and higher electricity generation with varying degrees of success, as shown in Table 1 [3][4][5][6][7][8][9][10][11][12][13]. However, these studies do not investigate the performance of the cell in multiple batch cycles, and the long-term stability of MFCs for Cu(II) reduction, even though the longevity of the MFCs is crucial for its commercial application.…”

“…However, these studies do not investigate the performance of the cell in multiple batch cycles, and the long-term stability of MFCs for Cu(II) reduction, even though the longevity of the MFCs is crucial for its commercial application. Non-corrosive, carbon-based materials such as carbon cloth, carbon rod, graphite felt, graphite foil, graphite rod, graphite plate, as well as, metals of titanium wire and copper plate have been used as cathodes in MFCs for Cu(II) reduction [3][4][5][6][7][8][9][10][11][12][13]. In view of a practical environmental application, the prolonged operation of MFCs results in increasing amount of copper deposited on the surface of the cathodes, and as a result, the interaction of the cathode material with the deposited copper becomes crucial for determining the long-term performance of the cell.…”

Technology of Microbial Electrolysis Cell with Statistical Optimization by Response Surface Methodology for Bio-Hydrogen Production and Phosphorus Recovery

“…A high pH difference between anode and cathode chambers led to high potential losses, negatively affecting MEC efficiency. Thereby, PBS was used in most of the two chamber MECs to keep the pH balance during the operation of the reactor (Luo et al, 2014).…”

Azo dye decolorization in an up-flow bioelectrochemical reactor with domestic wastewater as a cost-effective yet highly efficient electron donor source

“…Bioelectrochemical systems (BESs) have been suggested to be a promising technology in reductive degradation or transformation of diverse contaminants, including nitroaromatics (Mu et al, 2009b;Wang et al, 2011), azo dyes (Cui et al, 2016a(Cui et al, , 2016c, halogenated compound (Kong et al, 2015;Liang et al, 2013), heavy metals (Huang et al, 2014;Luo et al, 2014), nitrate (Pous et al, 2014), etc. Although superior performance of BES compared to the traditional biological processes were extensively reported in these contaminants, this technology is still far away from the practice as most of the existed studies were performed at lab scale and under ideal conditions, such as strong buffered system, sufficient electron donors and excellent conductivity.…”