Figure 2 | Scientific Reports

Figure 2

From: Bacterial community structure of electrogenic biofilm developed on modified graphite anode in microbial fuel cell

Figure 2

(a) Current density, (b) power density outputs as a function of time (days) with 1 K Ω as an external resistance in the MFCs constructed with different anodes (MFC-S1, MFC-S2, MFC-S3, and MFC-S4) using activated sludge as fuel, (c) Quantitative analysis of the growth rate of biofilm cells over different electrodes. Each data point is the mean of n = 3 at P value = 0.0001. The cell densities are calculated per electrode's unit surface area (cm2).

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