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PhD student in radiochemistry (F/H)

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : vendredi 3 juin 2022

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General information

Reference : UMR6457-SOPDEP-024
Workplace : NANTES
Date of publication : Friday, May 13, 2022
Scientific Responsible name : Gilles MONTAVON
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 October 2022
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

the work of the PhD student is part of the Zone Atelier Territoires Uranifères (https://zatu.org) and focuses on the study of the behavior of metals in environments characterized by enhanced natural radioactivity. The PhD student will study of the influence of colloids on the mobility/availability of metals at two sites of interest: a contaminated wetland located near a former uranium mine and mineral springs.

Work Context

The ambition of the project is to set up innovative methodologies to comprehensively characterize the system (nature and type of colloids, reactivity and lability) taking into account the heterogeneity of the natural environment and the applicability of the data to in-natura conditions by coupling laboratory and field approaches. These methodologies will then be applied to help answer two important questions of the ZATU, namely the role of colloids on the transport of two elements (U, Ra) at the contaminated wetland level and on the effects on microorganisms in radioactive mineral sources (with a focus on bioindicator microalgae of environmental stresses, the diatoms).

The PhD student must have a Master 2. The PhD student, with a background in chemistry (anaytics and/or physical chemistry) or geochemistry, should have a first experience in the field of environmental chemistry and a strong taste for laboratory and field experiments, with an interest in modeling. The PhD student will have to show autonomy and rigor with a good capacity to report. The mastery of computer tools such as spreadsheets (Pack Office, Excel, ..) and a good level of English are necessary.

Constraints and risks

A 6 months stay in Germany is planned at the beginning of the thesis (KIT-INE, Karlsruhe).
The characterization of colloids will be performed at KIT-INE (www.kit.ine.edu) (chromatography and detection (UV-VIS, MALLS, RI, ICP-MS)). The reactivity of colloids towards metals will be studied at the Subatech laboratory (batch experiments, trace analysis by HR-ICP-MS or nuclear metrology). Field work is planned in Auvergne (sampling, installation of sensors) in close collaboration with the LMGE laboratory. A geochemical modeling work will accompany the experimental work (PHREEQC,…).

Beyond the actors participating in the supervision of the work (KIT-INE, Subatech, LMGE), the work is part of a larger research program in connection with actors of the ZATU and the European project RADONORM (https://cordis.europa.eu/project/id/900009)

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