Laboratoire Eau Environnement et Systèmes Urbains (Leesu)

Recent publications

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Small-Size Microplastics in Urban Stormwater Runoff are Efficiently Trapped in a Bioretention Cell
Kelsey Smyth, Shuyao Tan, Tim van Seters, Johnny Gasperi, Rachid Dris, Jennifer Drake, Elodie Passeport
, 2024, ⟨10.1021/acsestwater.4c00037⟩
Comprehensive analysis of a widely pharmaceutical, furosemide, and its degradation products in aquatic systems: Occurrence, fate, and ecotoxicity
Fidji Sandré, Régis Moilleron, Christophe Morin, Laure Garrigue-Antar
, 2024, 348, pp.123799. ⟨10.1016/j.envpol.2024.123799⟩
Assessment of two non-invasive techniques for measuring turbulent benthic fluxes in a shallow lake
Felipe Breton, Guilherme Calabro-Souza, Andreas Lorke, Philippe Dubois, Magali Jodeau, Régis Moilleron, Brigitte Vinçon-Leite, Jiří Jan, Jakub Borovec, Bruno J. Lemaire
, 2024, pp.124032. ⟨10.1016/j.envpol.2024.124032⟩
Time-varying microplastic contributions of a large urban and industrial area to river sediments
E. Dhivert, J. Pruvost, T. Winiarski, Johnny Gasperi, F. Delor-Jestin, Bruno Tassin, B. Mourier
, 2024, 347, pp.123702. ⟨10.1016/j.envpol.2024.123702⟩
Comparative Microplastic Analysis in Urban Waters Using μ-FTIR And Py-GC-MS: A Case Study in Amsterdam
Feride Öykü Sefiloglu, Cleo Stratmann, Marthinus Brits, Martin J.M. van Velzen, Quinn Groenewoud, A. Dick Vethaak, Rachid Dris, Johnny Gasperi, Marja Lamoree
, 2024, pp.124088. ⟨10.1016/j.envpol.2024.124088⟩

Supervisory authorities

Member of

Assistant Professor - Université Paris-Est Créteil

LEESU - Université Paris-Est Créteil, École des ponts ParisTech, AgroParisTech

1. Contact

Contact: julien.le-roux(AT)

Phone: +33(0)1 82 39 20 80

Address: Faculté des Sciences et Technologie, MSE 307, Université Paris-Est Créteil (UPEC), 61 avenue du Général de Gaulle, 94010 Créteil Cedex

ORCID identifier
LinkedIn profile
ResearchGate profile
List of scientific communications (HAL)
Review activity (

2. Research themes

  • Characterization and reactivity of natural waters, wastewater and organic micropollutants with oxidants used in water treatment. Studies about formation mechanisms of disinfection byproducts (especially nitrogenous ones, e.g., NDMA, haloacetamides) during chloramination, chlorination or ozonation of natural waters or wastewaters as well as organic pollutants and model compounds.
  • Organic pollutants in surface waters and wastewaters. Degradation mechanisms of organic pollutants and identification of transformation products (GC-MS and LC-MS analyses, high resolution mass spectrometry).
  • Transfer and transformation of organic micropollutants in urban systems: comprehension, quantification and modeling. Modeling transport and degradation mechanisms of organic pollutants in the urban aquatic environment based on in situ measurements, pilots experiments or microcosms.

3. Current research

  • Tertiary treatment of organic micropollutants in wastewater effluents
    - Carboplus project (SIAAP - SAUR): performances of an industrial activated carbon pilot in fluidized bed for the removal of organic micropollutants
    - Potential use of ozone coupled to activated carbon
    - Identification of degradation products (high resolution mass spectrometry)
    - action R2.5 of the OPUR program about wastewater treatment by oxidation(ozonation, UV photolysis, peracids). PhD thesis supervision (Christelle Nabintu Kajoka).
  • Analytical chemistry
    - Screenatm’eau project: Method developpement of non-target screening for the analysis of micropollutants by liquid chromatography coupled to high resolution mass spectrometry at the interface water/atmosphere
    - ANR WaterOmics project: Characterization of urban organic by high resolution mass spectrometry. Supervision of PhD thesis (Nina Huynh)
    - action R2.6 and O2 theme of the OPUR program : Lon-term characterization of wastewater by non-targert analyses (high resolution mass spectrometry)
  • Pollutants behavior in urban systems
    - ReFUJ project: PICRI Transformation of a urban brownfield to a park. Study of organic pollutants transfer from the soil to underground water. Simulations in column experiments and influence of hydrological conditions.
    - Roulépur project: Adsorption isotherms of organic micropollutants (alkylphenols and bisphenol A) on soil from a sustainable urban drainage system

4. Current Teaching

5. Collective involvement

6. Professional background

Dates Position
2015 Assistant professor at LEESU
2012-2014 Post-doctoral fellow at the Water Desalination and Reuse Center (KAUST, Saudi Arabia)
2011-2012 Researcher and teaching lecturer at
ENSIP and Université de Poitiers
2008-2011 PhD in Chemistry, specializing in water chemistry and microbiology (LCME, UMR6008, Université de Poitiers). Lecturer at ENSIP and Université de Poitiers
2008 Engineer from École Supérieure d’Ingénieurs de Poitiers (ENSIP, ex-ESIP)

Scientific production, on HAL-ENPC, ordered by type