Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 566, Issue -, Pages 796-805Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.05.118
Keywords
Ammonia oxidizing bacteria; Pharmaceutical; Biotransformation; Cometabolism; Transformation products; Modeling
Categories
Funding
- Australian Research Council (ARC) through Discovery Early Career Researcher Award [DE130100451]
- ARC Discovery Project [DP130103147]
- University of Queensland Foundation Research Excellence Award
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Pharmaceutical residues could potentially pose detrimental effects on aquatic ecosystems and human health, with wastewater treatment being one of the major pathways for pharmaceuticals to enter into the environment. Enhanced removal of pharmaceuticals by ammonia oxidizing bacteria (AOB) has been widely observed in wastewater treatment processes. This article reviews the current knowledge on the biotransformation of pharmaceuticals by AOB. The relationship between the pharmaceuticals removal and nitrification process was revealed. The important role of AOB-induced cometabolism on the biotransformation of pharmaceuticals as well as their transformation products and pathways was elucidated. Kinetics and mathematical models describing the biotransformation of pharmaceuticals by AOB were also reviewed. The results highlighted the high degradation capabilities of AOB toward some refractory pharmaceuticals, with their degradations being clearly related to the nitrification rate and their transformation products being identified, which may exhibit similar or higher ecotoxicological impacts compared to the parent compound. (C) 2016 Elsevier B.V. All rights reserved.
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