'1 0,9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 - 0- 0 0 #108 + #109 Time (d#ys) 0 #110 A #111 x #112 Figure 5-9. Phenol degradation curves in single-compound systems (initial concentration 1 ppm). 1 2 3 4