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947.
titre
Assessing water quality restoration measures in Lake Pampulha (Brazil) through remote sensing imagery
auteur
Alexandre Assunção, Talita Silva, Lino de Carvalho, Brigitte Vinçon-Leite
article
, 2025, ⟨10.1007/s11356-025-35914-6⟩
titre
Stock and vertical distribution of microplastics and tire and road wear particles into the soils of a high-traffic roadside biofiltration swale
auteur
Max Beaurepaire, Tiago de Oliveira, Johnny Gasperi, Romain Tramoy, Mohamed Saad, Bruno Tassin, Rachid Dris
article
, 2025, pp.126092. ⟨10.1016/j.envpol.2025.126092⟩
titre
How to monitor and forecast microbiological quality in bathing sites in urban water bodies? The La Villette study site (Paris)
auteur
Arthur Guillot - Le Goff, Natalia Angelotti de Ponte Rodrigues, Rémi Carmigniani, Brigitte Vinçon-Leite
article
, 2025, TSM 12/2024, pp.219-228. ⟨10.36904/tsm/202412219⟩
titre
Modelling evapotranspiration in urban green stormwater infrastructures: Importance of sensitivity analysis and calibration strategies with a hydrological model
auteur
Ahmeda Assann Ouédraogo, Emmanuel Berthier, Jérémie Sage, Marie-Christine Gromaire
article
, 2025, 185, pp.106319. ⟨10.1016/j.envsoft.2025.106319⟩
titre
Capacity of the Fungi Trichoderma Koningiopsis and Talaromyces Verruculosus for Hg Leaching, Immobilization and Absorption During the Dissolution of Cinnabar
auteur
Clarisse Balland, Vanessa Alphonse, My Dung Jusselme, Samir Abbad-Andaloussi, Noureddine Bousserrhine
article
, 2025, 5 (1), pp.12. ⟨10.3390/applmicrobiol5010012⟩
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MIDI presentation

by Daniel Thevenot - published on

MIcroorganisms: actors governing the degradation of DIuron in sewage sludge during biological treatment

Duration: 2022-2024

Project name: MIcroorganisms: actors governing the degradation of DIuron in sewage sludge during biological treatment

Project acronym: MIDI

Keywords: microorganisms, wastewater treatment plants, biological treatment, micropollutants, ecotoxicology

Project leader: My Dung Jusselme and Régis Moilleron

1. Project presentation

The omnipresence of emerging micropollutants in effluents from wastewater treatment plants (WWTP) pose a serious concern due to theirs complex toxicological and ecotoxicological for aquatic environment. During biological treatment in WWTP, organic micropollutants are exposed to multiple degradation pathways and can undergo many reactions by various kinds of microbial resources present in sewage sludge. Under the activities of these microorganisms, numerous micropollutants are transformed into the other products and/or degraded into by-products, which are more toxic than the original products. Therefore, many micropollutants are found in the effluents in higher concentrations than those in the influents. However, the interactions between microorganisms and micropollutants are not well characterized. In this case, we interest in the microbial reactions on the transformation and degradation of micropollutants during biological wastewater treatment processes.

In this study, diuron will be used as a model for the understanding of the mechanisms of transformation and degradation through microbial reactions and this can being tested for other micropollutants.

2. Project objectives

  • The first objective is to test the hypothesis that an additional quantity of diuron is produced during wastewater treatment from the transformation of precursor compounds.
  • The second objective is to study the processes of diuron degradation by the microorganisms present in the activated sludge during the biological treatment.
  • The last one is to research the microbial inoculum capable of diuron degradation in different systems of wastewater treatment.

3. Financial support

The MIDI project (2022-2024) is funded by the «Initiative Structurante Ecosphère Continentale et Côtière» from the INSU department of CNRS (EC2CO).