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H/F 3 years PhD position

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

Date Limite Candidature : lundi 13 décembre 2021

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General information

Reference : UMR7272-ALIMIJ-002
Workplace : NICE
Date of publication : Monday, November 22, 2021
Scientific Responsible name : ALICE MIJA & PATRICK NAVARD
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 February 2022
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

Overview of the project. Plastic pollution might lead to the degradation of soils, with major environmental and economical costs for agriculture. Considering the multiple facets of plastic pollution (contaminant cocktails including additives and non-intentionally added substances NIAS, added alone in mulching or closely entangled with residual organic matter in amendments). With a novel methodology based on a back and forth collaboration between polymer chemistry and soil ecology, several exposure scenarios of soil organisms to custom-made plastics will be explored in order to decipher their toxicity in different environmental compartments (rhizosphere, microorganisms, mesofauna, plastisphere), and evaluate their impacts on soil functions and on biogeochemical cycles.
This project is financed by Agence Nationale de la Recherche.

Context and mission. The PhD student will prepare various well-controlled custom-made microplastics and will fully characterize their chemical composition (polymer, additives and some NIAS). Possible changes undergone by plastics during waste treatment will be studied.
The physical aspect of plastic particles will be assessed using optical and electron microscopies. The chemical composition of the prepared plastics will be characterized by a combination of state-of-art chemical techniques. These techniques will be used to search for possible plastic changes in the organic amendments, in the bodies and feces of soil organisms of the incubated soil samples.

Work Context


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