Fig. 4b. The pH values
increased from 5.5 to 7.9 and 6.2 after 24 h of incubation and reached final values of 9.05 and 8.7 for stirred and static cultures, respectively. The pH increase was followed by a rise of the decolourization
yields and CODs removal efficiencies
(Fig. 4c and d). As observed by Dirk et al. (2003), the fungus produces organic compounds during the starting of growth period, which will be decomposed later by enzymes.