Three additional tests were done with optimum parameters of
Cell C (Table 4). The initial pH in these tests was 4.1 and the electric
charge per volume was 115 C/l. Results were similar to results at
the center point of the mode, which was expected because the factor
values were close to each other. The model predicts a TOC value
of 4.04 mg/l, which is slightly lower than the measured value. The
predicted final pH was 7.1, which is slightly higher than the measured
value. The predicted aluminum concentration dissolved from
the electrodes was 9.97 mg/l, whereas the measured aluminum
concentration was 7.90–9.52 mg/l. Turbidity, color, and residual
metal concentrations were close to predicted values. According
to the results of these verification tests, the model predicts water
quality parameters with high accuracy.