Cometabolic biotransformation of benzotriazole in nitrifying batch cultures.

摘要: Abstract Benzotriazole (BT) is a corrosion inhibitor widely distributed in aquatic environments. Little known about the cometabolic capacity of stabilized nitrifying sludge to biotransform BT. The contribution nitrification process simultaneous oxidation ammonium and biotransformation BT (5 mg/L) was evaluated 49 d batch cultures inoculated with produced steady-state nitrification. could consume obligate presence ammonium. A higher obtained by increasing initial concentration (100–300 mg N/L), reaching 2.3- 5.8-fold increases for efficiency specific rate removal. At 300 mg NH4+-N/L, 40.8% 77.6% which completely oxidized into nitrate. In assays allylthiourea added as monooxygenase (AMO), it shown that totality associated AMO activity. addition acetate did not favor heterotrophic provoked inhibitory effects on This first study showing role oxidizing bacteria their potential use cometabolism application treatment wastewater contaminated