## 4 Discussion  
When evaluating the five operational parameters against the reduction of turbidity according to Figure 2, it is shown that the factor with the greatest influence is the voltage, corroborating it in Table 4 of ANOVA due to its greater contribution with respect to the other parameters. By increasing the potential values from 4 to 10 volts as seen in Figure 5A, it was possible to increase the percentage of turbidity reduction reaching 56.83% and 100%, a growing effect in the elimination of turbidity. This originated effect is analogous to those reported in [37], where they worked at 6, 8.5 and 10 volts, for one hour of treatment on grey water, reaching a reduction of 68%, 73%, and 86% respectively.  
On the other hand, the effect on removal is due to the increase in particle size as a function of time, studied by [38], where he reported that in a synthetic sample of kaolinite, the size formed is affected as the voltage and time are increased, allowing the generation of a higher sedimentation rate of the particles.  
This ascending effect of the voltage on the turbidity can also be seen in the report presented by [39], they worked in the range of 2.9 to 11.7 mA/cm\({}^{2}\), for a time of 14 min on water. residues from car washes, achieving close to a 96% reduction in turbidity. On the other hand, the work presented by [15], also reported the influence of the applied potential on turbidity, where they evaluated 4 voltage levels for a period of 15 min such as: 2, 5, 10, and 15 V, achieving a reduction 83% for voltage 2 and 92% for 15 volts; therefore, as stated [40], the applied voltage is an influential and important parameter. As a main step, it ensures the production of Al\({}^{3+}\) ion coagulants as a result of electrolytic oxidation of the electrode. Table 7 shows the results.  
From Table 3 we generate Figure 7 which shows the effect of the process parameters with respect to energy consumption in kWh/m\({}^{3}\). From said figure we observe that the average energy consumption in the 27 experiments was 0.5 kWh/m\({}^{3}\).  
In addition, the factor with the greatest influence was the electrical potential applied to the electrocoagulation cell, as indicated by the diagram, the lowest energy consumption (0.069) was obtained with the electrical potential at 4 volts and the highest energy consump  
\begin{table}
\begin{tabular}{c c} \hline \hline
**Electric Potential (V)** & **Turbidity (\%)** \\ \hline
2 & 83 \\
5 & 90 \\
10 & 91 \\
15 & 92 \\ \hline \hline \end{tabular}
\end{table}
Table 7: Effect of the applied potential difference on the removal of the turbidity.  
tion (0.94) was obtained at an electrical potential of 10 volts. Likewise, it is observed that turbidity has a significant influence on energy consumption at the high level, 0.376 kWh/m\({}^{3}\) is consumed, whose value is below the average.  
In the study carried out by [15], about the reduction of turbidity and chromium content in tannery wastewater by electrocoagulation process using aluminum electrodes at an electrical potential of 10 volts, pH of 6.1, and a time of 90 min. The authors obtained an energy consumption of 1.5 kWh/m\({}^{3}\), which is quite close to that obtained in our present study.