“…Ozone has numerous applications in the treatment of effluent and industrial residues (Masten & Davies, 1994;Rice, 1999;Kunz et al, 1999Kunz et al, , 2002Freire et al, 2000Freire et al, , 2001Bassani, 2003;Vogelpohl & Kim, 2004;Assalin et al, 2004aAssalin et al, , 2004bAssalin et al, , 2007Assalin et al, , 2009Almeida et al, 2004;Melo et al, 2006;Moraes et al, 2006;Catalkaya & Kargi, 2007;Assalin & Durán, 2007a;Lima, 2007;Medeiros, 2010;Domenjoud et al, 2011;Rivas et al, 2011). According Mahmoud and Freire (2007), the use of ozone as an oxidation agent has increased in the last decades.…”