Residual concentrations of three micropollutants as a function of the reaction time with laccase preparations from S. cyaneus (♦) and T. versicolor (▲), and in a control without laccase (●). Degradation of bisphenol A (BPA), diclofenac (DFC) and mefenamic acid (MFA) at three different pH values (5, 6 and 7), at 25°C. Average and values of duplicates. The initial micropollutant concentration, present in mixture, was at 20 mg l-1 for the three compounds. The initial laccase activity was 210 and 220 U l-1 for T. versicolor and S. cyaneus laccases, respectively. Lines: variable order reaction model fitted to the data.