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Correlation of tetracycline and sulfonamide antibiotics with corresponding resistance genes and resistant bacteria in a conventional municipal wastewater treatment plant

Antibiotics and corresponding resistance genes and resistant bacteria have been considered as emerging pollutants worldwide. Wastewater treatment plants (WWTPs) are potential reservoirs contributing to the evolution and spread of antibiotic resistance. In this study, total concentrations of tetracyc...

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Bibliographic Details
Published in:The Science of the total environment 2012-04, Vol.421-422, p.173-183
Main Authors: Gao, Pin, Munir, Mariya, Xagoraraki, Irene
Format: Article
Language:English
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Summary:Antibiotics and corresponding resistance genes and resistant bacteria have been considered as emerging pollutants worldwide. Wastewater treatment plants (WWTPs) are potential reservoirs contributing to the evolution and spread of antibiotic resistance. In this study, total concentrations of tetracycline and sulfonamide antibiotics in final effluent were detected at 652.6 and 261.1ng/L, respectively, and in treated sludge, concentrations were at 1150.0 and 76.0μg/kg dry weight (dw), respectively. The quantities of antibiotic resistance genes and antibiotic resistant bacteria in final effluent were quantified in the range of 9.12×105–1.05×106 gene abundances /100mL (genomic copies/100mL) and 1.05×101–3.09×103CFU/mL, respectively. In treated sludge, they were quantified at concentrations of 1.00×108–1.78×109 gene abandances/100mL and 7.08×106–1.91×108CFU/100mL, respectively. Significant reductions (2–3 logs, p
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2012.01.061