Energy consumption optimization
Fig. 3, compares the voltage rise between the conventional EC and spiral EC configurations. To reduce energy consumption, the voltage should be reduced as much as possible. In general, two reasons can be expressed for increasing voltage in ECF. First, the development of a passive film on the anode, and second, the generation of hydrogen gas on the cathode.
These issues increase electrical resistance and hinder optimal removal results, requiring excessive energy consumption. To address these problems and prevent voltage rise, enhancing flow hydrodynamics around the electrodes is crucial, pushing out bubbles and improving mass transfer near the anode. The spiral EC configuration, depicted in Figure 3, shows promising results with lower voltage experienced across all concentrations, suggesting a potential solution to mitigate these challenges.
