Advanced oxidation processes (AOPs) are among promising technologies that have received
increasing interest for the treatment of drinking water and many industrial wastewaters. Among the
advanced oxidative processes, the application of ozone in the industrial treatment effluents is also very
interesting due to highly oxidizing characteristics. However, in the Kraft effluent treatment the
ozonation process results in negligible total organic carbon removal (TOC). At the same time, high
ozone doses are necessary, generating appreciable costs [11,12,22-26].