3. Results
3.1. Currentconsumption
Consumption of electrons from the cathode commenced in both replicate reactors after approximately two weeks of BES operation at a set potential of −0.4 V (Fig. 2a and b). During the bioelectro- chemical reactor start-up period, glucose was added to the cathode chambers to accelerate biofilm formation on the cathode surface. After day 14, addition of substrate was ceased to allow onset of