Figure 4 | Scientific Reports

Figure 4

From: Sediment microbial fuel cells as a barrier to sulfide accumulation and their potential for sediment remediation beneath aquaculture pens

Figure 4

(a) Microsensor profiles of porewater sulfide (tot-S2− = H2S + HS− + S2−) for all conditions; sediment only control (SO), open circuit control (OC), SMFC-1, and SMFC-2 on day 96. Anode depths for both SMFC-1 and 2 are indicated with dotted lines and the dashed line indicates the sediment–water interface. (b) Sulfide depth profile for SMFC-1 on day 96 showing the drawdown of sulfide to 0 μM at the anode depth (dotted line). The heavy dashed lines above and below the anode depth is the best fit line describing the linear decrease in sulfide as the anode is approached from either above or below.

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