Pollutant Removal from Wastewater at Different Stages of the Tanning Process by Electrocoagulation

Figure 6

Evolution of factors (COD, TOC, turbidity, and chromium, %) as a function of wastewater sample at different stages of the tanning process for an EC system at 28 mA/cm² during 60 min and working with Fe (a) and Al (b) electrodes.

(a)

(b)