Alternatively, competitive
microorganisms (e.g., methanogens) present in particulates
can divert substrate electrons to other electron sinks than
coulombs [4,28], which can finally dilute ARB biofilm density on
the anode and decrease current density and coulombic efficiency
in MXCs. There are, however, no studies that quantitatively
evaluate the three limiting parameters separately in MXCs
treating domestic wastewater, while those factors co-exist in
the wastewater.