Figure 3: HPLC analysis of Reactive lanasol Black and its degradation metabolites resulting under anaerobic–aerobic conditions: (a) Untreated dye, (b) at the beginning of the anaerobic incubation (after 2 h); (c) after anaerobic incubation for 10 h; and (d) after anaerobic (10 h)-subsequently aerobic incubation for 4 h.