Xenobiotic removal efficiencies in wastewater treatment plants: Residence time distributions as a guiding principle for sampling strategies

Majewsky, Marius; Gallé, Tom; Bayerle, Michael; Goel, Rajeev; Fischer, Klaus; Vanrolleghem, Peter

doi:10.1016/j.watres.2011.09.005

Cited by 52 publications

(28 citation statements)

References 22 publications

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“…In fact, it is true that the assumption of steady state loading from the WWTPs may be inaccurate given the temporal variability in effluent pharmaceutical loads (Majewsky et al 2011;Nelson et al 2011) and the time encompassed by the measurements (i.e. reach travel times).…”

Section: Discussionmentioning

confidence: 99%

“…reach travel times). In fact, variations in pollutant loads in the influent of the WWTPs are dampened in the effluent, since daily influent loads are distributed over more than one day in the effluent because of the particular WWTP hydrodynamics (Majewsky et al 2011). Still, the reported variability of some compounds in the WWTP effluents (Nelson et al 2011) was most likely reflected in the deviations from the ideal first-order decay of pharmaceuticals along the river segments ( Figure 2).…”

Section: Discussionmentioning

confidence: 99%

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

Acuña

Schiller

García-Galán

et al. 2015

Science of The Total Environment

107

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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 ecosystemsThis 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

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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

Acuña

Schiller

García-Galán

et al. 2015

Science of The Total Environment

107

View full text Add to dashboard Cite

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“…Similarly to Ternes (1998) who suggested that glucuronide conjugates formed during metabolism of drugs may be cleaved as these metabolites pass through WWTPs, thereby increasing the concentration of the parent compound in the treated wastewater, negative removals might be explained by the transformation of conjugated metabolites during biological treatment. These observations might also have been be due to mixing regime characteristics, as well as flow and concentration variability that may have led to negative elimination efficiencies, as demonstrated by Majewsky et al (2011). In any event, Ort et al (2010) pointed out the need for more sophisticated sampling strategies to accurately determine removals of drugs in wastewater treatment plants.…”

Section: Removal Of Drugs By Wastewater Treatmentmentioning

confidence: 99%

Analysis of drugs of abuse in wastewater from two Canadian cities

Yargeau

Taylor

et al. 2014

Science of The Total Environment

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Several drugs of abuse, including amphetamines, cocaine and its metabolite, benzoylecgonine and several opioid prescription drugs were detected in wastewater from two Canadian cities, a small community (75,000 population) and a large urban center (1.6 million population). The objective of this study was to evaluate community use of these drugs in two cities with large differences in population size and demographics. In addition, we evaluated the use of the Polar Organic Chemical Integrative Sampler (POCIS) as a monitoring tool for drugs of abuse

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“…This often results in variable removal rates as illustrated by the comparison of full-scale SMX monitoring studies in Table 1. In order to avoid biased estimates and negative elimination efficiencies, the use of a sampling strategy that takes into consideration the hydraulic residence time distribution of WWTPs has been proposed (Majewsky et al 2011a). While the differences in the microbial communities of AS systems can lead to variable SMX removals, the active fraction of AS has also been shown to impact the biodegradation of SMX in full-scale systems and should be considered in future studies (Majewsky et al 2011b).…”

Section: Removal In Full-scale Wwtps Based On Asmentioning

confidence: 99%

Biodegradation of sulfamethoxazole: current knowledge and perspectives

Larcher

Yargeau

2012

Appl Microbiol Biotechnol

114

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Antibiotic compounds, like sulfamethoxazole (SMX), have become a concern in the aquatic environment due to the potential development of antibacterial resistances. Due to extensive consumption, excretion and disposal, SMX has been frequently detected in wastewaters and surface waters. This has led to numerous studies investigating the nature of SMX, with many researchers focusing on the biodegradation and persistence of SMX during wastewater treatment and in the environment. This review provides a summary of recent developments, outlines the discrepancies in observations and results, and demonstrates the need for further research to determine optimal biological removal strategies for SMX and other antibiotics.

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Xenobiotic removal efficiencies in wastewater treatment plants: Residence time distributions as a guiding principle for sampling strategies

Cited by 52 publications

References 22 publications

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

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

Analysis of drugs of abuse in wastewater from two Canadian cities

Biodegradation of sulfamethoxazole: current knowledge and perspectives

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