Study of the Optical Properties of Dissolved Organic Matter in the Seine River Catchment (France)

Nguyen, Phuong T.; López, C. H.; Bonnot, Caroline; Varrault, Gilles; Benedetti, Marc F.; Cordier, Marie-Ange; Gelabert, Alexande; Cordier, Laure; Tharaud, Mickaël; Parlanti, E.

doi:10.1007/978-94-007-5634-2_39

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…Previous HIX and BIX data from the Seine and the Marne were obtained in September 2012 by Nguyen (2014). The mean HIX values from La Villette (0.86) and the Marne (0.85) are similar to 2012 values found in the river Marne (0.88) in the same stretch as ours.…”

Section: Relationship Of Fib and Parafac Componentssupporting

confidence: 81%

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Fluorescence spectroscopy for tracking microbiological contamination in urban waterbodies

Angelotti de Ponte Rodrigues,

Carmigniani,

Guillot-Le Goff

et al. 2024

Front. Water

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Dissolved organic matter (DOM) plays a crucial role in freshwater ecosystem function. Monitoring of DOM in aquatic environments can be achieved by using fluorescence spectroscopy. Particularly, DOM fluorescence can constitute a signature of microbiological contamination with a potential for high frequency monitoring. However, limited data are available regarding urban waterbodies. This study considers fluorescence data from field campaigns conducted in the Paris metropolitan region: two watercourses (La Villette basin and the river Marne), two stormwater network outlets (SO), and a wastewater treatment plant effluent (WWTP-O). The objectives of the study were to characterize the major fluorescence components in the studied sites, to investigate the impact of local rainfall in such components and to identify a potential fluorescence signature of local microbiological contamination. The components of a PARAFAC model (C1-C7), corresponding to a couple of excitation (ex) and emission (em) wavelengths, and the fluorescence indices HIX and BIX were used for DOM characterization. In parallel, fecal indicator bacteria (FIB) were measured in selected samples. The PARAFAC protein-like components, C6 (ex/em of 280/352 nm) and C7 (ex/em of 305/340 nm), were identified as markers of microbial contamination in the studied sites. In the La Villette basin, where samplings covered a period of more than 2 years, which also included similar numbers of wet and dry weather samples, the protein-like components were significantly higher in wet weather in comparison to dry weather. A positive relationship was obtained between C6 and FIB. In urban rivers, the high frequency monitoring of C6 levels would support the fecal contamination detection in rivers. In addition, it could help targeting specific field campaigns to collect comprehensive dataset of microbiological contamination episodes.

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Section: Relationship Of Fib and Parafac Componentssupporting

confidence: 81%

“…(Parlanti et al, 2000;Fellman et al, 2010;Meng et al, 2013). Higher humic character was found during highwater than in low-water periods in the catchments of the Seine (France) (Nguyen, 2014) and in a river in the United States (Jaffé et al, 2008).…”

Section: Rainfall Impact In Fluorescence Components In La Villette Basinmentioning

confidence: 95%

Fluorescence spectroscopy for tracking microbiological contamination in urban waterbodies

Angelotti de Ponte Rodrigues,

Carmigniani,

Guillot-Le Goff

et al. 2024

Front. Water

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“…Each plot was generated by scanning excitation wavelengths from 200 to 400 nm and emitting fluorescence between 280 and 500 nm with 10 nm steps. The slits for excitation and emission were set to 10 nm and the scan speed was 12,000 nm/min [15].…”

Section: Eem Fluorescence Spectroscopy Analysismentioning

confidence: 99%

Intermittent Microaeration Technology to Enhance the Carbon Source Release of Particulate Organic Matter in Domestic Sewage

Zhu

Liu

et al. 2022

Water

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Domestic sewage treatment plants often have insufficient carbon sources in the influent water. To solve this problem, the commonly used technical means include an additional carbon source, primary sludge fermentation, and excess sludge fermentation, but these methods are uneconomical, unsustainable, and not applicable to small-scale wastewater treatment plants. Intermittent microaeration technology has the advantages of low energy-consumption, ease of application, and low cost, and can effectively promote anaerobic digestion of municipal sludge; however little research has been reported on its use to enhance the carbon sources release of particulate organic matter (POM) from domestic wastewater. Therefore, the effect of intermittent microaeration on the carbon source release of POM was evaluated in this study, with POM as the control test. The results showed that the release concentration of soluble chemical oxygen demand (SCOD) was the highest on day 4 under microaerobic conditions, and the concentrations of SCOD, NH4+-N, and PO43−-P in the liquid phase were 1153, 137.1, and 13 mg/L, respectively. Compared with the control group, the SCOD concentration increased by 34.2%, and the NH4+-N and PO43−-P concentrations decreased by 18.65% and 17.09%, respectively. Intermittent microaeration can effectively promote the growth of Paludibacter, Actinomyces, and Trichococcus hydrolytic fermentation functional bacteria. Their relative abundances increased by 282.83%, 21.77%, and 23.47%, respectively, compared with the control group. It can simultaneously inhibit the growth of acetate-type methanogenic archaea, Methanosaeta and Methanosarcina, with a decrease in relative abundances of 16.81% and 6.63%, respectively. The aforementioned data show that intermittent microaeration can not only promote the hydrolysis of POM, but can also reduce the loss of acetic acid carbon source, which is a cost-effective technical way to enhance the release of a carbon source of particulate organic matter in domestic sewage.

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Study of the Optical Properties of Dissolved Organic Matter in the Seine River Catchment (France)

Cited by 2 publications

References 3 publications

Fluorescence spectroscopy for tracking microbiological contamination in urban waterbodies

Fluorescence spectroscopy for tracking microbiological contamination in urban waterbodies

Intermittent Microaeration Technology to Enhance the Carbon Source Release of Particulate Organic Matter in Domestic Sewage

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