Université de Lorraine
IUT de Thionville-Yutz
Espace Cormontaigne
Impasse Alfred Kastler
57970 Yutz
My research has focused mainly on the valorization of agro-resources and organic waste to produce bioenergy (methane, hydrogen, ethanol) and high value-added metabolites. This work contributes directly to the energy transition by proposing sustainable and renewable solutions.
I have also conducted studies on wastewater treatment, combining physicochemical and biological approaches to reduce the environmental impact of industrial and municipal discharges, while developing processes for energy recovery from effluents. Part of my research has also focused on the reuse of treated wastewater for artificial groundwater recharge.
In addition, I am interested in the application of bioprocesses to optimize the production of human and animal stem cells, an approach that could lead to the development of innovative and low-cost therapies.
CAREER:
10/2025: Temporary Teaching and Research Assistant (Thionville-Yutz University Institute of Technology - Soil and Environment Laboratory)
03/2024-09/2025: Postdoctoral researcher (Reaction Process Engineering Laboratory LRGP, ENSAIA, Vandoeuvre Les Nancy)
07/2022-12/2023: Environmental Project Engineer (EGCONSULTING, Tunisia)
01/2020-06/2022: Postdoctoral researcher (Laboratory of Ecology and Microbial Technology LETMi, INSAT, Tunisia)
09/2019-2022: Temporary Assistant (National Institute of Applied Sciences and Technology INSAT, Tunisia)
09/2012- 02/2014: Engineer (National Institute for Research in Rural Engineering, Water and Forestry, Tunisia)
Professional background:
2019: PhD in Biological Engineering (National Institute of Applied Sciences and Technology INSAT, University of Carthage, Tunisia)
2011: Master's degree in Industrial Biotechnology (INSAT, University of Carthage, Tunisia)
2008: Industrial Biology Engineer (INSAT, University of Carthage, Tunisia)
Fermentation Engineering, Environmental Biotechnology, Microbial Biotechnology, Waste Management, Treatment and Recovery, Separation Engineering, Wastewater Treatment, Metabolic Biochemistry and Enzymology, Toxicology and Ecotoxicology, Biochemistry, Analytical Methods in Biology, etc.
Saidi, R., Ziadi, M., Bouazizi, S., Bouallagui, H., Hamdi, M., 2025. Biohydrogen and volatile fatty acids production from prickly pear cladodes (Opuntia ficus indica) as renewable feedstock. Euro-Mediterr J Environ Integr 10, 3153–3164. https://doi.org/10.1007/s41207-025-00759-5
Saidi, R., Hamdi, M., Bouallagui, H., 2023. Enhanced hydrogen and methane production from date fruit wastes using semi continuous two-stage anaerobic digestion process with increasing organic loading rates. Process Safety and Environmental Protection 174, 267–275. https://doi.org/10.1016/j.psep.2023.04.018
Saidi, R., Hamdi, M., Bouallagui, H., 2022. Improvement of Biohydrogen Production from Date Wastes by Thermotoga maritima Using a Continuous Anaerobic Membrane Bioreactor. Waste Biomass Valor. https://doi.org/10.1007/s12649-022-01966-9
Saidi, R., Hamdi, M., Bouallagui, H., 2020. Hyperthermophilic hydrogen production in a simplified reaction medium containing onion wastes as a source of carbon and sulfur. Environ Sci Pollut Res 27, 17382–17392. https://doi.org/10.1007/s11356-020-08270-w
Saidi, R., Liebgott, P.P., Hamdi, M., Auria, R., Bouallagui, H., 2018. Enhancement of fermentative hydrogen production by Thermotoga maritima through hyperthermophilic anaerobic co-digestion of fruit-vegetable and fish wastes. International Journal of Hydrogen Energy 43, 23168–23177. https://doi.org/10.1016/j.ijhydene.2018.10.208
Saidi, R., Liebgott, P.P., Gannoun, H., Ben Gaida, L., Miladi, B., Hamdi, M., Bouallagui, H., Auria, R., 2018. Biohydrogen production from hyperthermophilic anaerobic digestion of fruit and vegetable wastes in seawater: Simplification of the culture medium of Thermotoga maritima. Waste Management 71, 474–484. https://doi.org/10.1016/j.wasman.2017.09.042
Gannoun, H., Gaida, L.B., Saidi, R., Miladi, B., Hamdi, M., Bouallagui, H., Liebgott, P.P., Auria, R., 2018. A simple gas pressure manometer for measuring hydrogen production by hydrogenogenic cultures in serum bottles. Process Biochemistry 65, 157–163. https://doi.org/10.1016/j.procbio.2017.10.011