Fig. 3. Chromatograms of selected cycles from FSBR1 (A) and GSBR1 (B) obtained at the onset of the reaction phase (WW0), at the end of the anaerobic phase (WWanaer) andat the end of the aerobic phase (WWfinal). Peak a corresponds to the stable aromatic amine 4-amino-naphthalene-1-sulfonic acid resulting from Acid Red 14 reduction andpeak b corresponds to Acid Red 14.