Skip to main content
. 2012 Feb 7;7(2):e30495. doi: 10.1371/journal.pone.0030495

Figure 2. Long-term electricity generation in an air-cathode MFC operating with a 750 Ω external resistance.

Figure 2

Filled arrow, removal of cathode biofilm; Open arrow, anode biofilm sampling for DNA extraction; Filled arrowhead, solution replacement with primary clarifier effluents collected on the same day; Open arrowhead, solution replacement with primary clarifier effluents stored at 4°C for 5–10 days; Solid star, linear sweep voltammetry to analyze anode performance.