respectively generating an important rise in the overall COD removal (65.7%) in the first case but only slight (67.7%) for the latest. These results are
in agreement with previously reported by Ca~nizares et al. (2005, 2007), they found that electrogenerated aluminum in the electrochemical processes vary directly with the electrical charge passed even at values greater that those estimated according to Faraday's
Law as result of chemical dissolution of the electrode surfaces as discussed earlier.