Modelling the fate of nonylphenolic compounds in the Seine River — part 1: Determination of in-situ attenuation rate constants

Cladière, Mathieu; Bonhomme, Céline; Vilmin, Lauriane; Gaspéri, Johnny; Flipo, Nicolas; Tassin, Bruno

doi:10.1016/j.scitotenv.2013.09.028

Cited by 11 publications

(7 citation statements)

References 29 publications

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“…The largest challenge here is the correct timing of sampling suited to fully encompass a mass of water along its way downstream. This principle is widely termed 'Lagrangian sampling' and was often adopted based on estimates or measurements of flow velocities (Battaglin et al, 2001;Cladière et al, 2014;Moody, 1993;Yu-Chen Lin et al, 2006). Since the effluent flow rates released by WWTPs typically vary within short time periods, concentration changes in the receiving streams are additionally affected by dispersion.…”

Section: Introductionmentioning

confidence: 99%

A high-precision sampling scheme to assess persistence and transport characteristics of micropollutants in rivers

Schwientek

Guillet

Hermann

et al. 2016

Science of The Total Environment

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Increasing numbers of organic micropollutants are emitted into rivers via municipal wastewaters. Due to their persistence many pollutants pass wastewater treatment plants without substantial removal. Transport and fate of pollutants in receiving waters and export to downstream ecosystems is not well understood. In particular, a better knowledge of processes governing their environmental behavior is needed. Although a lot of data are available concerning the ubiquitous presence of micropollutants in rivers, accurate data on transport and removal rates are lacking. In this paper, a mass balance approach is presented, which is based on the Lagrangian sampling scheme, but extended to account for precise transport velocities and mixing along river stretches. The calculated mass balances allow accurate quantification of pollutants' reactivity along river segments. This is demonstrated for representative members of important groups of micropollutants, e.g. pharmaceuticals, musk fragrances, flame retardants, and pesticides. A model-aided analysis of the measured data series gives insight into the temporal dynamics of removal processes. The occurrence of different removal mechanisms such as photooxidation, microbial degradation, and volatilization is discussed. The results demonstrate, that removal processes are highly variable in time and space and this has to be considered for future studies. The high precision sampling scheme presented could be a powerful tool for quantifying removal processes under different boundary conditions and in river segments with contrasting properties.

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Section: Introductionmentioning

confidence: 99%

A high-precision sampling scheme to assess persistence and transport characteristics of micropollutants in rivers

Schwientek

Guillet

Hermann

et al. 2016

Science of The Total Environment

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“…A global project of modelling the fate of nonylphenolic compounds in river water was launched in 2010 with the objectives to determine in-situ attenuation rate constants and to apply them to simulate their annual behaviour for present and upcoming years (Cladière et al, (2014) and this paper).…”

Section: Discussionmentioning

confidence: 99%

“…Finally, the biodegradation parameters remain constant in the model over the year, 19 while the water temperature variability between summer and winter (± 10°C) may affect the biodegradation 20 constant rates (Manzano et al, 1999). Moreover, the results between July and September 2011 highlight 21 discrepancies according to the biogeochemical status of the Seine River (Cladière et al, 2014). However, despite 22 these deficiencies, the current simulations are satisfying to predict the annual concentrations of 4-NP, NP 1 EC 23 and NP 1 EO in the Seine River.…”

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confidence: 96%

“…For this study the biogeochemical module is updated to take into account 18 the biodegradation pathways of NPnEO lastly updated in the literature by Giger et al, (2009 As previously explained in the companion paper (Cladière et al, 2014), the nonylphenol polyethoxylate 5 biodegradation scheme (Giger et al, 2009) and two sampling campaigns are used to determine biodegradation 6 parameters. The attenuation rate constants K 1 , K 1 ' and K 2 represent the biotransformation of NP 1 EO and NP 1 EC 7 into their products (NP 1 EC or NP) while K 3 represents the global disappearance of 4-NP from the dissolved 8 phase and takes into account biodegradation, volatilisation and sorption onto particles without possibility to 9 differentiate the processes (Cladière et al 2014). Jonkers et al (2005) The efficiency of an annual simulation is evaluated by calculation of the Nash-Sutcliffe coefficient (Nash and 5 Sutcliffe, 1970) …”

mentioning

confidence: 99%

“…6). NP 1 EO concentrations are not discuss because of their significant variability (± 37 %) pointed out 3 in (Cladière et al, 2014). In addition, the increase of air temperature by 2050 (+ 2 K) or 2100 (+ 3 K) (probably 4 lower for water temperature) is not considered since the variability intra-annual in 2010 (± 10 K) seems not 5 influence the modelling of the fate of nonylphenolic compounds in the Seine River.…”

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confidence: 99%

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Modelling the fate of nonylphenolic compounds in the Seine River — part 2: Assessing the impact of global change on daily concentrations

Cladière

Bonhomme

Vilmin

et al. 2014

Science of The Total Environment

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Impact of hydro-sedimentary processes on the dynamics of soluble reactive phosphorus in the Seine River

et al. 2014

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International audienceThis paper focuses on soluble reactive phosphorus (SRP) dynamics along a 225 km stretch of the Seine River, including the Paris urban area, for the 2007–2011 period. The impact of hydro-sedimen-tary processes on SRP concentrations and fluxes is estimated under various hydrological conditions. Sorp-tion interaction parameters between SRP and sus-pended matter are experimentally determined on river water samples and are included in a hydro-ecological model. Simulated concentrations are compared to weekly measurements at 11 monitoring stations. The introduction of sorption in the model reduces the root mean square error of simulated SRP concentrations by 20 % and allows the simulation of particulate inorganic P (PIP) accumulation in the system. With these ameliorations, the model constitutes a reliable manage-ment tool, which is compatible with the requirements of new regulations as the European Water Framework Directive. P mass balances are assessed upstream and downstream the major waste water treatment plant of the Paris urban area. P fluxes in the system are mainly driven by hydrological conditions and sediment-related processes. While SRP is the predominant P form during low flow, PIP accounts for more than 70 % of the total P during high flow. Moreover, SRP sorption fluxes are of the same order of magnitude as biotic fluxes affecting SRP concentrations. According to the model, and based on all the available data, 75 % of the SRP release by the river bed sediments occurs during high flow periods, and PIP exchanges at the sediment–water interface are more than 4 times higher during high flow periods than during low flow periods

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Modelling the fate of nonylphenolic compounds in the Seine River — part 1: Determination of in-situ attenuation rate constants

Cited by 11 publications

References 29 publications

A high-precision sampling scheme to assess persistence and transport characteristics of micropollutants in rivers

A high-precision sampling scheme to assess persistence and transport characteristics of micropollutants in rivers

Modelling the fate of nonylphenolic compounds in the Seine River — part 2: Assessing the impact of global change on daily concentrations

Impact of hydro-sedimentary processes on the dynamics of soluble reactive phosphorus in the Seine River

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