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Chemical Recycling of Plastic Materials: Experimental Study and Modeling of PET Depolymerization via Glycolysis

IFP Energies nouvelles -
Lyon (69)

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Détails de l'emploi

Qualifications

Français
Anglais
Master

Description complète du poste

Chemical Recycling of Plastic Materials: Experimental Study and Modeling of PET Depolymerization via Glycolysis

Réf ABG-138892

Sujet de Thèse

04/05/2026

Contrat doctoral

IFP Energies nouvelles

Lieu de travail

Lyon - Auvergne-Rhône-Alpes - France

Intitulé du sujet

Chemical Recycling of Plastic Materials: Experimental Study and Modeling of PET Depolymerization via Glycolysis

Champs scientifiques

Génie des procédés

Mots clés

Plastic advanced recycling, PET, glycolysis, kinetics, modelling

Description du sujet

In a context where environmental and societal challenges related to plastic waste management are becoming increasingly urgent, the chemical recycling of plastic materials, such as the glycolysis of polyethylene terephthalate (PET), emerges as a complementary solution to traditional mechanical recycling. By aligning with a circular economy approach, this innovative method aims to valorize existing resources while limiting the extraction of new raw materials.
IFP Energies Nouvelles is a leading French research center in the fields of energy, transport, and the environment. It focuses part of its work on developing these advanced chemical recycling techniques, ranging from fundamental research to their application on an industrial scale. In this context, process modeling, particularly of reactive systems, is essential both for understanding the underlying phenomena (dissolution, mass transport, catalysis, reactions, etc.) and for supporting the development of industrial processes.
The objective of this PhD thesis is to study and model the primary and secondary depolymerization mechanisms of PET. Particular attention will be given to the impact of the polymer's structure (crystallinity, chain length, etc.) and the raw material (additives, impurities, etc.) on the decomposition process, as well as the nature of the oligomers and monomers formed. Modern modeling approaches, based on population balance equations, will be explored. An extensive experimental program, including the setup and monitoring of experiments in a batch reactor along with advanced analytical methods (SEC-RI-UV, MALDI/MS, etc.), will support the construction and selection of the most relevant model.
This PhD project represents a unique opportunity for comprehensive training in scientific research, combining experimental work and advanced modeling. The candidate will develop valuable and versatile expertise in the field of chemical engineering.

Prise de fonction :

02/11/2026

Nature du financement

Contrat doctoral

Précisions sur le financement

Présentation établissement et labo d'accueil

IFP Energies nouvelles

IFP Energies nouvelles is a French public-sector research, innovation and training center. Its mission is to develop efficient, economical, clean and sustainable technologies in the fields of energy, transport and the environment. For more information, see our WEB site.
IFPEN offers a stimulating research environment, with access to first in class laboratory infrastructures and computing facilities. IFPEN offers competitive salary and benefits packages. All PhD students have access to dedicated seminars and training sessions.

Site web :

https://www.ifpenergiesnouvelles.fr/

Profil du candidat

Academic requirements University Master degree in Chemical Engineering/Chemistry
Language requirements English level B2 (CEFR) + Willingness to learn French
Other requirements Basic knowledge in kinetics and reactor engineering

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