Fig. 1
Change of biomass (triangles, a), pH (squares, b) and electron production (circles, b) in the anode compartment of a BES reactor of P. putida F1 with K3[Fe(CN)6] as electron acceptor in control (black symbols) and closed circuit with the anode potential poised at +0.697 V (white symbols). Data have been averaged from ten (closed circuit) and three (control) biological replicates with a total of 79 and 30 samples, respectively. Means and standard deviations (X and Y error bars) are given [average sample size n = 7 (closed circuit); exact sample size n = 3 (control)]