Figure 4.

Passively aerated BES reactors of P. putida RL-PCA at an applied potential of 0.2 V. (a–c) Benchtop BES reactors (n = 3), showing data for cell density (OD₆₀₀) and current production, glucose consumption and 2-ketogluconate production, formation of PCA and rhamnolipids (RL). (d–f) Electrobioreactors (n = 2), with the equivalent data shown as for the benchtop reactors. The dotted lines indicate the length of the benchtop BES reactor experiment. Gluconate and acetate were not detected in these experiments and are therefore not shown.