Figure 4From: Environmental assessment of residues generated after consecutive acid-base pretreatment of sugarcane bagasse by advanced oxidative processMain effects of process variables (temperature, pH, Fenton reagent concentration and UV radiation) on total phenols percentage reduction from lignin solution by photo-Fenton process, according to L 9 Taguchi matrix design of experiment. S/N ratio (the larger is the best) to total phenol percentage reduction.Back to article page