Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate

Abstract : Veterinary pharmaceuticals (VPs) increasingly used in animal husbandry have led to their presence in aquatic environments –surface water (SW) or groundwater (GW) – and even in tap water. This review focuses on studies from 2007 to 2017. Sixty-eight different veterinary pharmaceutical residues (VPRs) have been quantified worldwide in natural waters at concentrations ranging from nanograms per liter (ng.L-1) to several micrograms per liter (µg.L-1). An extensive up-to-date on sales and tonnages of VPs worldwide has been performed. Tetracyclines (TCs) antibiotics are the most sold veterinary pharmaceuticals worldwide. An overview of VPRs degradation pathways in natural waters is provided. VPRs can be degraded or transformed by biodegradation, hydrolysis or photolysis. Photo-degradation appears to be the major degradation pathway in SW. This review then reports occurrences of VPRs found in tap water, and presents data on VPRs removal in drinking water treatment plants (DWTPs) at each step of the process. VPRs have been quantified in tap water at ng.L-1 concentration levels in four studies of the eleven studies dealing with VPRs occurrence in tap water. Overall removals of VPRs in DWTPs generally exceed 90% and advanced treatment processes (oxidation processes, adsorption on activated carbon, membrane filtration) greatly contribute to these removals. However, studies performed on full-scale DWTPs are scarce. A large majority of fate studies in DWTPs have been conducted under laboratory at environmentally irrelevant conditions (high concentration of VPRs (mg. L-1), use of deionized water instead of natural water, high concentration of oxidant, high contact time. etc.). Also, studies on VPRs occurrence and fate in tap water focus on antibiotics. There is a scientific gap on the occurrence and fate of antiparatic drugs in tap waters.
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Journal of Hazardous Materials, Elsevier, 2019, 361, pp.169-186. 〈10.1016/j.jhazmat.2018.08.075〉
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Lise Charuaud, Emilie Jardé, Anne Jaffrézic, Marie-Florence Thomas, Barbara Le Bot. Veterinary pharmaceutical residues from natural water to tap water: Sales, occurrence and fate. Journal of Hazardous Materials, Elsevier, 2019, 361, pp.169-186. 〈10.1016/j.jhazmat.2018.08.075〉. 〈insu-01863750〉

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