as high cost, formation of a second source of pollution and its
experimental level, are still holding them back from widespread
application in industry [5]. On the other hand, the electrocoagulation
(ECG) process is an easy system to operate, requiring low
equipment costs, maintenance and chemical consumption, as well
as low quantity of sludge is produced when compared to the traditional
chemical coagulation/flocculation process [6–8]. In the ECG
system, sacrificial anodes dissolve into the liquid medium and
metal hydroxides are formed by the reaction of metal ions generated
at the anode with hydroxide anions released by water hydrolysis
at the cathode. The solubility of the complexes formed is
dependent on pH and ionic strength. The metal species react with
negatively charged particles in the water to form flocs, which will
have the power to destabilise and aggregate the suspended particles
in order to precipitate or adsorb dissolved contaminants [9]