Fig 1.
Schematic representation of the experimental setup.
Fig 2.
Temporal power performance of the individual MFCs in the cascade system observed during the first (a) and the second (b) trial.
Fig 3.
Real-time bioluminescence recorded for the closed-circuit MFCs (after 9th MFC in the cascade) and abiotic open circuit control MFCs (after 3rd MFC in the cascade).
Fig 4.
Changes in bioluminescence intensity, bacterial viability and physical-chemical parameters of anolyte.
Log reduction (LR) was calculated using Inlet t0 as the reference point. LR datasets are represented by an average of 3 replicates ±SD. Closed circuit MFCs were marked by gray circles. The star * symbol indicates the first trial, while labels without symbol indicate the second trial. The data between oc3 and k3 are shown disconnected, since the two cascades were independent (see Fig 1), i.e. the effluent from oc3 did not flow into k3. ORP data are shown for Trial 2 only, due to technical problems of measurement during Trial 1.
Table 1.
Monitoring of viability and luminescence of S. enteritidis on the biofilm surface.
Fig 5.
Relationship between power and oxidation-reduction potential with killing efficacy.