As result, lower
requirement of electrical potential was observed for higher
pollutant removal, as shown in the experiments with salt addition.
For these experimental runs, the addition of 0.01MNaCl showed an
ECEI value of 360.0 kWh Kg1 cm2 achieving 72.5% of COD
removal. Increasing NaCl concentration added up to 0.1 M (i.e. one
order of magnitude higher) generated an ECEI value of
185.4 kWh Kg1 cm2 and achieved 83.9% COD removal. Evidently,
the second is more effective on both, energy consumption and
removal.