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Occurrence and in-stream attenuation of wastewater-derived pharmaceuticals in Iberian rivers

Amultitude of pharmaceuticals enter surface waters via discharges of wastewater treatment plants (WWTPs), and many raise environmental and health concerns. Chemical fate models predict their concentrations using estimates of mass loading, dilution and in-stream attenuation. However, current comprehension of the attenuation rates remains a limiting factor for predictive models.We assessed in-stream attenuation of 75 pharmaceuticals in 4 river segments, aiming to characterize in-stream attenuation variability among different pharmaceutical compounds, as well as among river segments differing in environmental conditions. Our study revealed that in-streamattenuation was highly variable among pharmaceuticals and river segments and that none of the considered pharmaceutical physicochemical and molecular properties proved to be relevant in determining the mean attenuation rates. Instead, the octanol–water partition coefficient (Kow) influenced the variability of rates among river segments, likely due to its effect on sorption to sediments and suspended particles, and therefore influencing the balance between the different attenuation mechanisms (biotransformation, photolysis, sorption, and volatilization). The magnitude of themeasured attenuation rates urges scientists to consider themas important as dilutionwhen aiming to predict concentrations in freshwater ecosystems

This research was supported by aMarie Curie European Reintegration Grant (PERG07-GA-2010-259219) and by a Marie Curie Career Integration Grant (PCIG9-GA-2011-293535) within the 7th European Community Framework Programme, aswell as by the SpanishMinistry of Economy and Competitiveness through the projects SCARCE (Consolider-Ingenio 2010 CSD2009-00065) and ENDERUS (CTM-2009-13018), and the postdoctoral grants “Juan de la Cierva” (jci-2009-05604 and jci-2010- 06397), and by the European Union through the European Regional Development Fund (FEDER). This work was partly supported by the Generalitat de Catalunya (Consolidated Research Group: Water and Soil Quality Unit 2009-SGR-965)

© Science of the Total Environment, 2015, vol. 503-504, p. 133-141

Elsevier

Autor: Acuña i Salazar, Vicenç
Schiller Calle, Daniel von
García-Galán, Maria Jesús
Rodríguez Mozaz, Sara
Corominas Tabares, Lluís
Petrović, Mira
Data: 15 gener 2015
Resum: Amultitude of pharmaceuticals enter surface waters via discharges of wastewater treatment plants (WWTPs), and many raise environmental and health concerns. Chemical fate models predict their concentrations using estimates of mass loading, dilution and in-stream attenuation. However, current comprehension of the attenuation rates remains a limiting factor for predictive models.We assessed in-stream attenuation of 75 pharmaceuticals in 4 river segments, aiming to characterize in-stream attenuation variability among different pharmaceutical compounds, as well as among river segments differing in environmental conditions. Our study revealed that in-streamattenuation was highly variable among pharmaceuticals and river segments and that none of the considered pharmaceutical physicochemical and molecular properties proved to be relevant in determining the mean attenuation rates. Instead, the octanol–water partition coefficient (Kow) influenced the variability of rates among river segments, likely due to its effect on sorption to sediments and suspended particles, and therefore influencing the balance between the different attenuation mechanisms (biotransformation, photolysis, sorption, and volatilization). The magnitude of themeasured attenuation rates urges scientists to consider themas important as dilutionwhen aiming to predict concentrations in freshwater ecosystems
This research was supported by aMarie Curie European Reintegration Grant (PERG07-GA-2010-259219) and by a Marie Curie Career Integration Grant (PCIG9-GA-2011-293535) within the 7th European Community Framework Programme, aswell as by the SpanishMinistry of Economy and Competitiveness through the projects SCARCE (Consolider-Ingenio 2010 CSD2009-00065) and ENDERUS (CTM-2009-13018), and the postdoctoral grants “Juan de la Cierva” (jci-2009-05604 and jci-2010- 06397), and by the European Union through the European Regional Development Fund (FEDER). This work was partly supported by the Generalitat de Catalunya (Consolidated Research Group: Water and Soil Quality Unit 2009-SGR-965)
Format: application/pdf
Cita: ttp://dx.doi.org/10.1016/j.scitotenv.2014.05.067
ISSN: 0048-9697
Accés al document: http://hdl.handle.net/10256/12353
Llenguatge: eng
Editor: Elsevier
Col·lecció: MICINN/PN 2009-2014/CSD2009-00065
AGAUR/2009-2014/2009 SGR-965
Versió postprint del document publicat a: ttp://dx.doi.org/10.1016/j.scitotenv.2014.05.067
Articles publicats (D-EQATA)
info:eu-repo/grantAgreement/EC/FP7/259219
info:eu-repo/grantAgreement/EC/FP7/293535
És part de: © Science of the Total Environment, 2015, vol. 503-504, p. 133-141
Drets: Tots els drets reservats
Matèria: Aigües residuals -- Depuració
Sewage -- Purification
Medicaments -- Aspectes ambientals
Drugs -- Environmental aspects
Aigua -- Contaminació
Water -- Pollution
Títol: Occurrence and in-stream attenuation of wastewater-derived pharmaceuticals in Iberian rivers
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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