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Reporting on the degradation of aquatic environments. The role of knowledge in the implementation of policies for the protection of water resources in sub-Saharan Africa
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Veronica Mitroi, José Frédéric Deroubaix, Youssoupha Tall, Ahi Kouaido Chrislain, Jean-François Humbert
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, Association des amis de la revue de géographie de Lyon, 2022, 96 (1), ⟨10.4000/geocarrefour.19353⟩
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Correction: Gasperi et al. Micropollutants in Urban Runoff from Traffic Areas: Target and Non-Target Screening on Four Contrasted Sites. Water 2022, 14, 394
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Johnny Gasperi, Julien Le Roux, Steven Deshayes, Sophie Ayrault, Louise Bordier, Lila Boudahmane, Hélène Budzinski, Emilie Caupos, Nadège Caubrière, Kelsey Flanagan, Martin Guillon, Nina Huynh, Pierre Labadie, Laurent Meffray, Pascale Neveu, Chandirane Partibane, Julien Paupardin, Mohamed Saad, Lucie Varnede, Marie-Christine Gromaire
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, MDPI, 2022, 14 (14), pp.2215. ⟨10.3390/w14142215⟩
titre
Determinants of Evapotranspiration in Urban Rain Gardens: A Case Study with Lysimeters under Temperate Climate
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Ahmeda Assann Ouédraogo, Emmanuel Berthier, Brigitte Durand, Marie-Christine Gromaire
article
, MDPI, 2022, 9 (3), pp.42. ⟨10.3390/hydrology9030042⟩
titre
Choisir de lutter contre certaines pollutions plutôt que d’autres - Mise en visibilité et ignorance des facteurs de dégradation du Lac de Guiers
auteur
Youssoupha Tall, José -Frédéric Deroubaix, Ibrahima Dia, Veronica Mitroi, Tidiane Ndoye, Sylvain Faye, Jean-François Humbert
article
, Société d'Anthropologie des Connaissances, 2021, 15 (4)
titre
High-Resolution Mass Spectrometry Screening of Wastewater Effluent for Micropollutants and Their Transformation Products during Disinfection with Performic Acid
auteur
Maolida Nihemaiti, Nina Huynh, Romain Mailler, Perrine Mèche-Ananit, Vincent Rocher, Rachid Barhdadi, R. Moilleron, Julien Le Roux
article
, American Chemical Society, 2022, ⟨10.1021/acsestwater.2c00075⟩

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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

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).