Energy and electrode consumptions were 0.39 kWh/m3 and 0.17 kg/m3 for the Al–Al electrode
pair, 1.24 kWh/m3 and 0.54 kg/m3 for the Fe–Al electrode pair and 0.99 kWh/m3 and 0.17 kg/m3 for the Al–Fe electrode pair at conductivity of 6 mS/cm in the same duration.