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