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Slope averages (C mg−1 BOD5) of the linear correlations of total charge (Q) vs introduced BOD5, and coulombic efficiency (CE) averages obtained for the three cells with standard deviation and relative standard deviation values
| Substrate | Slope | SD | RSD (%) | CE (%) | SD | RSD (%) |
|---|---|---|---|---|---|---|
| Peptone | 8.62 | 0.36 | 4.1 | 75.8 | 9.59 | 12.6 |
| Corn starch | 8.25 | 0.31 | 3.7 | 48.3 | 4.96 | 10.3 |
| Milk | 9.02 | 0.40 | 4.4 | 64.2 | 6.00 | 9.3 |
