“…In addition, apart from MB and MO, PEUF has been used in the removal of several ionic dyes such as: direct blue 71 (DB71), EBBR, RR 120, acid-orange 7 (AO7), carmine indigo (IC), amide black (AB), direct black (DB), reactive black 5 (RB5), acid blue 129 (AB129), orange II (OII), ethyl orange (EO), ST, malachite green (MG), bright green (BG), new fuchsia (NF), CV, MB, toluidine blue (TB), and acridine yellow (AY) [ 2 , 6 , 18 , 21 , 31 , 60 , 63 , 73 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 ]. Table 1 shows the classification of the dyes according to their chemical speciation in solution and their molecular structure.…”