One of the scientific objectives of Cyclann is to contribute to limiting the impacts and nuisances of waste and its management. The research unit also actively participates in the implementation of circular economy approaches and policies at the territorial level in order to allow the integration of the principles of the societal responsibility of organizations (RSO) and to meet the objectives of sustainable development (ODD).

The scientific project

The Cyclann team is particularly interested in four topics:

  • engineering and environmental sciences
  • water and effluent quality   
  • effluent and waste treatment   
  • environmental assessment
Nouveau logo Cyclann UniLaSalle Rennes

The research areas are mainly in engineering and environmental sciences:

  • Water and effluent quality: characterization of organic matter (natural, anthropogenic, particulate pollution, colloidal), indicators, degradation factors...
  • Effluent and waste treatment: development and optimization of physico-chemical, electro-chemical and biological processes.   
  • Environmental assessments: development of environmental performance assessment methodologies.
  • Diagnosis and forecasting of building material flows and construction site waste; analysis of material flows and stocks (metabolism) for the implementation of circular economy policies or approaches.

The team is working on this theme in association with the LERES (EHESP). The aim is to study both water and effluent quality in order to understand phenomena such as changes in water quality in a context of climate change.

The objective is to develop, optimize and control treatment processes (organic matter/anthropic matter discrimination) by characterizing in particular the phenomena of pollution transfer between the different granulometric fractions. The team is therefore working to define indicators, degradation factors or contributes to the development of monitoring methods based on optical methods.

The team works particularly on :

  • treatment by bioaugmentation or biostimulation on industrial or synthetic effluents;
  • electrochemical treatment of effluents containing metals and nanoparticles;
  • the treatment of gaseous effluents by absorption.

Some work, in particular the treatment of gaseous effluents containing VOCs by absorption, is carried out in collaboration with the ENSCR research laboratory. In the field of biological treatments, the projects aim to develop and optimize treatment processes.

Projects in this area aim to implement environmental assessment methods such as life cycle assessment or to propose methodologies to evaluate, for example, the environmental impact of a new treatment process.

The Team

Vanessa Barros, Associate professor at UniLaSalle since September 2020, PhD in Mathematics.

Vanessa Barros completed her PhD thesis (IMPA-Instituto de Matemática Pura e Aplicada, Rio de Janeiro, Brazil) on Partial Differential Equations.

Between 2011 and 2018 she worked as a associate professor at UFBa (Federal University of Bahia, Brazil) . She also completed several post-doctoral fellowships: UFAL (Federal University of Maceió, Brazil) for 6 months in 2010, University of Illinois at Urbana-Champaign (USA) for 1 year in 2014, and University of Porto (Porto,Portugal) for 1.5 years in 2019.

Research topics: Modeling, statistical testing, database analysis, differential equations.

Email :


Applied Sustainable Development Objectives

Objectif développement durable 4Objectif développement durable 9

Mathematics is transversal: all fields are nowadays concerned by mathematical models.

Hayet DJELAL: Associate professor at UniLaSalle - EME since 1992, Doctor of Chemistry from the University of Rennes 1, biotechnology speciality and engineer from the National Polytechnic School of Algiers, sanitary engineering option.

Hayet Djelal was coordinator of the Research and Projects from 2009 to 2011 and responsible for engineering works in the last year of the engineering cycle. Specialized in the field of biological treatment of water and waste, she is a part-time research associate of the Chemistry and Process Engineering team of the Ecole Nationale Supérieure de Chimie de Rennes.

Research topics: Biological treatment of effluents, methanization, industrial effluents (leachates, effluents from agro-food activities, organic waste ...), biomass valorization.

Hayet Djelal defended and validated her Habilitation to direct research on May 12, 2017. Her work was on "Intensification of effluent treatment processes by bio-augmentation or combined processes - valorization of biomass. "

See Hayet Djelal's profile on ResearchGate


Applied Sustainable Development Objectives

Objectif développement Durable 6Objectif développement durable 9

  • Water treatment
  • Biotreatment, physico-chemical treatment
  • Advanced biological treatment processes
  • Biovalorisation (biomass)
  • Aerobic fermentation
  • Anaerobic digestion
  • Innovation and transfer

Lucie Domingo, PhD in Industrial Engineering (Grenoble Alpes University, G-SCOP), Lucie Domingo has been working since 2008 on the multiple facets of eco-design as a researcher but also as much as an internal and external consultant with industrialists from different sectors (electrical, electronic, textile and construction in particular).  In 2013, she defended her thesis on the development of an eco-design method focusing on the integration of use and users in the development of sustainable products.

She also contributed to the creation of tools and support for the integration of eco-design, life cycle assessment and circular economy in industry (development of life cycle inventory and indicators and database management for product life cycle impact simulation).

Research topics: eco-design, design for sustainable behavior, life cycle assessment, circular economy, steering indicators, environmental strategy

Email :
See Lucie Domingo's profile on Researchgate


Applied Sustainable Development Objectives (in order of importance)

Objectif développement durable 12Objectif développement durable 9Odd11Objectif développement durable 13

  • Eco-design
  • Life cycle assessment (LCA)
  • Sustainable behaviors
  • Circular economy
  • Environmental strategy

Karine DUFOSSE, PhD in Environmental Sciences (INRA, UMR Ecosys), Karine Dufossé defended her thesis in 2013 on the environmental assessment of lignocellulosic crops for the production of 2nd generation bioethanol, based on the development of a mechanistic biophysical model, from plot scale to regional scale.

She then worked at AgroParisTech on the "Plant Ecophysiology" theme before doing a Post-Doc at INRA on the spatial development of a mechanistic model simulating NH3 emissions following mineral and organic nitrogen fertilization according to local pedoclimatic conditions.

Research topics: life cycle assessment (LCA), modeling, Geographic Information System (GIS), database, agricultural resources and biomass, nitrogen fertilization.

Email :
See Karine Dufossé's profile on ResearchGate


Applied Sustainable Development Objectives

Objectif développement durable 7Objectif développement durable 12Objectif développement durable 13Objectif développement durable 15

  • Life cycle analysis (LCA)
  • Mathematical modeling and database
  • Geographic Information System (GIS)
  • Agricultural biomass resources
  • Nitrogen fertilization

Abdoulaye KANE: Associate professor at UniLaSalle Rennes - EME since 2012, PhD in Process and Product Engineering from the Institut National Polytechnique de Lorraine (INPL) and Master's degree in Process and Product Engineering from the University of Paris 13.

In 2010, he defended his PhD thesis in Process and Product Engineering at the Laboratoire Réactions et Génie des Procédés- ENSIC Nancy (UMR 7274) on the study and design of a micro-structured distillation process allowing to intensify the heat and material transfers. This thesis has shown that the process intensification approach can allow a more rational use of energy and that it is closely related to equipment costs.

He was also a temporary attaché of higher education and research at the INP Lorraine and at the Ecole Nationale Supérieure de Chimie de Rennes. As a post-doctoral fellow at ENSCR (from 2011 to 2012), he worked on the PAMPAC Program: VOC Adsorption Process Modulated by Heat Pump, funded by ADEME and ENSCR in partnership with CNAM-CIAT and the company Prosim. He was an associate researcher of the Chemistry and Process Engineering team at the Ecole Nationale Supérieure de Chimie de Rennes between 2012 and 2018.

Research topics:

Process intensification (via heat and matter transfer), process sizing, design and optimization, Absorption processes - Gas/Liquid contactors, adsorption on activated carbon - Adsorption process modeling, micropollution treatment, Advanced Oxidation processes (Photocatalysis (UV/TiO2), ozonation...)

Email :

See Abdoulaye Kane's profile on Research Gate


Applied Sustainable Development Objectives

Objectif développement Durable 6Objectif développement durable 9Objectif développement durable 7Objectif développement durable 13

  • Water treatment
  • Innovation and transfer
  • Process intensification
  • Process design, sizing and optimization

Romain Ligny, Associate professor in chemistry for the environment since 2021

Romain LIGNY, PhD in Molecular and Macromolecular Chemistry (ISCR, UMR 6228), defended his thesis in 2018 on the synthesis of new sequence-controlled (co)polyesters by stereoselective polymerization catalysis. After a year as a temporary education (IUT Le Mans) and research attaché (IMMM, UMR 6283).

Teaching: Chemistry in general (organic, organometallic, atomistic, mineral, polymers), analytical sciences (spectrometry).

Research topics: Synthesis of target molecules in organic and organometallic chemistry, polymerization catalyst design, spectro(photo)metric characterization processes, polymer chemistry.

Email :

Applied Sustainable Development Objectives

Objectif développement durable 4Objectif développement durable 12

Angélique MAHIEU: Associate professor at UniLaSalle since 2016, Engineer in fine chemistry from INSA and PhD in materials science from the University of Rouen.

Angélique Mahieu did her PhD thesis on the implementation of biodegradable and active starch-based materials for food packaging, followed by several post-doctoral projects on the development of bio-based insulation materials based on agricultural co-products for the building industry.

Teaching: chemistry in all its forms, analytical sciences, material transformation processes.

Research topics: bio-based materials, materials for water treatment, valorization of natural resources

Email :

Applied Sustainable Development Objectives

Objectif développement durable 4Objectif développement durable 12Objectif développement durable 13

Mathilde Mercier, Senior Research Teacher in Energy. Ms. Mercier joined UniLaSalle Rennes in May 2021.  

An engineer from the Ecole Nationale Supérieure des Sciences du Génie Chimique and a Doctor of Process Engineering from the Institut National Polytechnique de Lorraine, Mathilde Mercier did her thesis in reactive extrusion on the optimization of polymer blend compatibilization.

She then held various positions and worked on different topics in the private sector as an R&D engineer, project manager, trainer and consultant. Her favorite topics are Process Engineering and Energy Transition.

First of all, she spent 9 years in the Research and Development Center at Rhodia in the Lyon region, where, as a process R&D engineer, she contributed to the development of new pharmaceutical processes for industrialization.
Then, as a polymer synthesis engineer, she managed projects for the synthesis of new polymers and the improvement of existing processes (pilots, technical assistance).
Finally, for 4 years, she developed a specific competence in Energy Efficiency for the group with the definition of a methodology applied to new processes & existing plants, the realization of energy savings and the active participation in governance committees of the energy management system. These projects were the subject of patents, publications and collaborations with engineering schools and consulting firms (EPFL, ENSIACET...).

Then, for 9 years, she was a consultant and trainer within IFPTraining with an expertise in Process Engineering and Energy Transition and was able to intervene with many industrialists in France and abroad.  

Her intervention themes were: Chemical Engineering, Operational, Energy Efficiency, Renewable Energies, Energy Transition, Refining Processes. She has supervised work-study groups and participated in the accreditation of training centers.

She has been a volunteer for several years at the Cité de l'Environnement, and has participated in the setting up of an exhibition on the circular economy.

For the past 10 years, she has been active and passionate about the energy transition.

Teaching: process engineering and energy.  

Research topics: process engineering, methodology for optimizing the energy efficiency of processes in order to limit the environmental impact, circular economy.

Email :

Applied Sustainable Development Objectives

ODD N°2 rcehercheObjectif développement durable 4Objectif développement Durable 6Objectif développement durable 7Objectif développement durable 12Objectif développement durable 13

Messika REVEL, Associate professor at UniLaSalle since January 2021, PhD in Biology.

Messika REVEL completed her doctoral thesis (Institut National de la Recherche Scientifique and NRC in Montreal) on the ecotoxicity of carbon nanotubes in aquatic invertebrates and the impact of abiotic factors (organic matter and cadmium), using standardized tests and biomarkers.

She was then a lecturer at the Université Catholique de l'Ouest (UCO) in Angers and did two years of postdoctoral work in the laboratory "Mer, Molécules, Santé" of UCO working on two projects on the accumulation and ecotoxicity of microplastics in estuarine invertebrates (MiPlAqua regional project and GIP Seine-Aval Plastic-Seine) She was also the pedagogical manager of the M2 "Environmental Management and Sustainable Development" option of the Master Ecology and Sustainable Development of the UCO in 2019-2020.

Research topics: ecotoxicology, ecology, biomarkers, immunotoxicity, genotoxicity, emerging contaminants, bioassays, nanomaterials, microplastics.


See Messika Revel's profile on Research Gate

Applied Sustainable Development Objectives

Objectif développement durable 4Objectif développement Durable 6odd 14 préservation de la faune aquatique

  • Ecotoxicology
  • Microplastics
  • Pollutants
  • Stress
  • Aquatic environment
  • Ecosystems
  • Immunotoxicity
  • Genotoxicity

Lydia Fryda, Associate professor at UniLaSalle Rennes - EME since 2021, graduated in Mechanical Engineering and holds a PhD in Process Engineering from the National Technical University of Athens (NTUA) on aspects of biomass gasification for energy production.

Lydia Fryda is an expert in process development for the valorization of organic residues into bioenergy and biochar. She has acquired international experience in R&D, coordination of national and European projects during her employment in the ECN and then TNO research centers until 2020. She joined Uni LaSalle EME in the European Interreg THREEC project as a research fellow and then as a Associate professor.

Teaching: Heat transfer, Thermodynamic equilibrium, Thermal machines

Research topics: Valorization of regional biomass for higher value products: biochar, energy, chemicals and fuels, with low environmental impact. Activation and functionalization of biochar with low environmental impact processes. Application of biochar to treat wastewater and stormwater. Life cycle and carbon footprint analysis of bio-based processes and products.


See Lydia Fryda's profile on Research Gate

Applied Sustainable Development Objectives

Objectif développement Durable 6Objectif développement durable 7Odd11Objectif développement durable 12Objectif développement durable 13odd 14 préservation de la faune aquatique

  • Biomass
  • Biochar
  • Energy
  • Environmental impact
  • Wastewater
  • Runoff water
  • Bio-based products
  • Life Cycle Assessment (LCA)
  • Carbon footprint of processes

Based on their expertise, the resource teachers work in support of student projects.

Thierry Henrion : His studies brought him to Rennes where he joined ENSAR (now Agrocampus Ouest), a training course supplemented by a year at INA-PG (AgroparisTech). His first job was spreading sludge from a wastewater treatment plant for a subsidiary of Suez. He followed the regulatory changes related to waste management and worked in composting, methanisation, landfill, sorting..., mainly in the East of France.

After a few years in operation, he joined a consultancy firm, Villers Services, with the mission of setting up sites classified for the protection of the environment (ICPE) related to waste treatment in Brittany and neighbouring regions. The chance encounters made him discover the LDC Algae project, a micro-algae farm project, very much focused on renewable energy and circular economy. He followed this project for a few years before applying to UniLaSalle Rennes - EME, with the strength of his field experience and wishing to pass on his knowledge and acquire new ones in a future-oriented, sustainable establishment....

He is a lecturer in waste management and ICPE for the engineering cycle, in particular in the Bachelor and MSc programs.

Email :

Caroline Le Moulec : After several years in an international humanitarian NGO based in Paris and Brussels, Caroline Le Moulec joined the UniLaSalle team.

A graduate of Sciences Po Bordeaux with a specialization in international economics, she has worked as a mobilization manager for the public (youth, media, companies, institutions) on sustainable development and humanitarian issues. She has also had the opportunity to coordinate several projects on a European scale with multiple partners (NGOs, solidarity associations, local authorities, companies) around the Sustainable Development Objectives (SDOs) as well as during the COP21 in Paris. "Continuing to mobilize on these issues and to act within UniLaSalle and with students is once again an exciting challenge to be taken up!"

She is in charge of sustainable development and teaches on this theme.

Email :

Thibaud Niel : His studies brought him to Rennes where he joined the EME after two years of CPGE Maths SUP- Maths SPE in Saint Maur des fossés (94). He completed his training with a Master's degree in environmental research validated at the Mines de Saint-Etienne.

His first job was managing a new hydraulic works department in a subsidiary of VINCI Energie. As a project manager, he supervised field teams and organized with his teams the implementation of public drinking water supply equipment.

Following this experience in Orleans, the call of Brittany was stronger. He therefore joined a food-processing group COOPERL to work on the group's water management. He had a role of technical advice and coordination within the company to integrate water management in the industrial production policy. As water is a major element of the files of Classified Installation for the Protection of the Environment in Brittany, he had a role of formalization and communication with various public actors (ministries, prefecture services...).

The guiding thread of his student and professional career is water management, particularly recycling (REUSE).

He likes to remind people of the PARETO law: 20% of the causes cause 80% of the consequences. According to him, the work of the engineer/coordinator is above all a work of analysis and research of the causes to be solved by the simplest possible actions.

He is now a teacher in water management and accompanies students in their professional project within the school.

Email :

Margaux LHUISSIER (Scholarship CIFRE company CHIMIREC, Co-supervision : A. KANE, UniLaSalle Rennes - A. AMRANE Université Rennes1- J-L. AUDIC, Université Rennes1, PhD Director: A COUVERT, ENSCR) - ECOV project (2016-2019)

This project proposes the reuse of oils collected by a waste oil collection and recycling company. The objective is to capture the VOCs emitted on their site, while providing for their concomitant recovery.

The aim is to transform what was previously considered as waste into a resource that can be recovered on site and at a lower cost. The ECOV project is part of the fight against air pollution and in particular the limitation of VOC emissions and odorous molecules.

In addition to the environmental issues, the project presents economic stakes linked to a lower investment in the process and a reduction in operating costs thanks to a regeneration of the absorbent, thus meeting the major concerns of sustainable development.

Alaa SALMA (Direction H. Djelal, co-supervision A. Amrane UR1, Florence Fourcade UR1, in partnership with ENSCR) - bioproduction of platform molecules by fermentation and electrofermentation (2017-2020)

The valorization of secondary raw materials by fermentation is accompanied by numerous metabolites that can be valorized in energy (ethanol, H2, CH4) but also in matter (glycerol, succinic acid ...). The process of fermentation from biomass allows the production of organic compounds that will be involved in other industrial processes. These "platform" molecules are often bioactive molecules for therapeutic, cosmetic or food use.

It is within this framework that a associate professor (H. Djelal, 30%) is participating in the Call A Project: Incentive Action "Emerging Scientific Challenges 2018" on the "Production of bioethanol and platform molecules by fermentation-separation and recovery of the product of interest" (2018-2019). The project leader is UMR CNRS 6226 - ISCRennes. This project consists in recovering co-products of the food industry into ethanol and platform molecules by fermentation. In order to separate and recover the molecules of interest, a separation step is necessary. Different membrane separation processes are envisaged alone or in cascades such as microfiltration or membrane distillation.

Research Projects

Assessment of biological risks and optimization of indoor air treatment processes in air conditioning systems in the food industry.


To test/develop a process coupling photocatalysis/cold plasma for the treatment of indoor air pollution in the agro-food industry, to evaluate the health risks, and to acquire knowledge on degradation modes.


ISCR (CIP-ENSCR), IRSET (LERES), Crystal cluster

UniLaSalle contact:

Valorization of biomass boiler ashes for the elaboration of composite materials for civil engineering.


To promote the development of the circular economy in the building sector, through the implementation of a Workshop dedicated to the development of criteria and indicators to serve as scientific bases for its characterization. The research will focus more specifically on the integration in construction projects of materials or products from short supply chains or from a logic of lengthening the material cycle.


Project sponsor: LGCgE - IUT Béthune, Partner: UniLaSalle-EME, UMONS - Materials Sciences, Biallais Industries, Dalkia Nord Ouest - Bois Energie, CERIB, B2E, Cd2e.

UniLaSalle-EME: coordinator of a batch, Hayet Djelal (72%), Karine Dufossé (14%), Thierry Henrion (7%) Vincent Augiseau (7%)

UniLaSalle contact:

This project aims at the development and introduction of economically viable value chains based on the use of biochar from biomass waste in the regions of North-Western Europe.

Initiator: University of Kassel, Germany

Partners: Cyclann UniLaSalle: Abdoulaye KANE and AGHYLE UniLaSalle: David HOUBEN
15 other European partners from Germany, Belgium, the United Kingdom, the Netherlands, France and Ireland.
13 other partners from 5 European countries.

Visit the website

Valorization of the ashes of BIOmass as GRAnulats and FIller in Construction blocks.

Objective: the valorization of biomass boiler ashes for the elaboration of composite materials for civil engineering.

Partners: LGCgE-IUT Béthune,DALKIA-Bois Energie France,CERIB,Biallais Industries,University of Mons (Belgium).

Contact: Hayet DJELAL

BLUEPRINT to a Circular Economy.


Analysis of the management of household and similar waste within communities by providing elements of quantitative diagnosis on the flows and by formulating recommendations on the optimization of management with regard to territorial circular economy strategies.

The BLUEPRINT project has a budget of €5.6 million over 3 years, co-financed by €3.9 million from the ERDF (European Regional Development Fund).

Partners :

Essex County Council (project leader), Kent County Council, EcoWise, Anglia Ruskin University, Peterborough Environmental City Trust, Université de Picardie Jules Verne, ESITC Caen, UniLaSalle, Morlaix Communauté and Neoma Business School.

Contact: Abdoulaye KANE


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Abdoulaye KANE
Director of CYCLANN Research Unit