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Lookup NU author(s): Catalina Rodriguez,
Professor David Graham
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© 2018 Elsevier Ltd. Antibiotics are drugs used on both animals and humans. However, when their residues or metabolites are released into the environment, it can cause microbial resistance in water bodies, including wastewater treatment plants. In this study, extended spectrum β-lactamases (ESBLs) were monitored in an anaerobic-aerobic combined biological treatment system. The enzymes Oxacillinase (OXA), Cefotaximases (CTX) and New Delhi metallo-β-lactamase (NDM-1) were added to the treatment and analyzed by qPCR (Quantitative Polymerase Chain Reaction) and plate count using a selective medium. Quantification of the effect of adding these enzymes was performed before, during and after they were added in order to establish the behavior of the treatment system under three different conditions. Anaerobic reactors proved more efficient at treating wastewater containing the β-lactamases OXA, CTX and NDM-1 than the ASP3 aerobic reactor that was working individually. However, an anaerobic-aerobic treatment train was much more effective at removing organic matter, even in the presence of β-lactamase.
Author(s): Rodriguez DC, Ahammad ZS, Penuela GA, Graham DW
Publication type: Article
Publication status: Published
Journal: Journal of Environmental Chemical Engineering
Print publication date: 01/02/2020
Online publication date: 06/03/2018
Acceptance date: 05/03/2018
ISSN (electronic): 2213-3437
Publisher: Elsevier Ltd
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