2000-2003: Municipal solid waste (MSW) compost re-use in agricultural soils. National project, Water Research and Technology Center, Tunisia (Principal Investigator).

2000-2002: Study on the Environmental Pollution of Mediterranean Coastal Lagoons in Tunisia. Joint project between: Water Research and Technology Center, Tunisia / JICA, Japan (Principal Investigator).

2003-2006: Study on the bioremediation of polycyclic aromatic hydrocarbons (PAHs): physico-chemical, microbiological and ecotoxicological characterization. Research Institute for Bioresources, Okayama University, Japan. (PhD project)

2006-2008: Predictability of the joint toxicity of PAHs and heavy metals in soil-water suspension using the novel ostracod bioassay (Heterocypris incongruens).Research Institute for Bioresources, Okayama University, Japan (Postdoctoral project)

2008-2009: Phytoextraction of dissolved heavy metals in hydroponics using hyperaccumulator Thlaspi caerulescens. Graduate School of Environmental Science, Okayama University, Japan (Principal Investigator)

2011-2018: Urban sewage sludge re-use in agricultural soils: The agri-environmental impact. National project, Water Research and Technology Center, Tunisia (Principal Investigator).

2012-2013: The impact of engineered nanoparticles on the toxicity and uptake of organic contaminants by agricultural plants. Fulbright program, The Connecticut Agricultural Experiment Station (CAES), New Haven, USA (Visiting Researcher).

2015: Single and joint effects of TiO₂ nanoparticles and imidacloprid on the freshwater bivalve Limnoperna fortunei (golden mussel). DAAD program, Technical University of Berlin, Germany (Visiting Researcher).

2017-2020: Improvement of water and nutrient retention and use efficiency in arable farming systems from field to catchment scale in Europe and North Africa (WaterFARMING). JPI-Eranet Project, WaterWorks 2015 (Principal Investigator).

2018-2021: M-NEX. The Moveable Nexus: Design-led urban food, water and energy management innovation in new boundary conditions of change. QNRF-Belmont Forum Collaborative Research. BFSUGI01-1120-170005 (Principal Investigator).

2018-present: The development of hydroponics vegetable factory. Marubeni Protechs Corporation. QUEX-CAS-MJF-VF-18/19 (Principal Investigator).

2020-2021: EPS-rich microalgal biomass production in industrial wastewater using nitrogen-rich waste fertilizer and flue gas for application as soil-additive. QAFCO Research and Development Grant 2020 (ID 116) (Principal Investigator).

2021-2023: Conventional and non-conventional organic amendments to improve soil structure and productivity in Qatar (PROQATAR). Qatar-Japan Research Collaboration (M-QJRC-2020-9) (Lead Principal Investigator).

2021-2023: Tertiary treatment of produced water for water reuse and clean energy recovery: towards a 10 ha microalgae plant design in Qatar desert. Qatar-Japan Research Collaboration (ID 106) (Principal Investigator).

2020-2023: Nanoscale sulfur for plant nutrition, disease suppression and food safety. The Center for Nanoscale Sulfur Research (CeNaSR). USDA-AFRI Project No. 2020-67022-32416 (International Partner).

2020-2024: Industrial crop production in Qatar with biosolids and treated sewage effluent and industrial water. QNRF-NPRP12S-0205-190045 (Principal Investigator).

2021-2023: Mapping and Combating Plastic Marine Litter in the Arabian Gulf (COMPLAS). QU Internal Collaborative Grant (ID 119) (Principal Investigator).

2021-2023: Biodegradable polymer-nanoparticle composites for controlled release and targeted delivery of phosphorus during plant growth. The Center for Nanoscale Phosphorus Delivery (CeNaPD). USDA-AFRI Project No. 2021-67021-34001 (International Partner).

2022-2024: Educating Qatari community for TSE reuse is the key to improve food security. Third Food Security Call, MME03-1101-210008 (Principal Investigator).

2022-2024: Application of an Innovative Sustainable Agro-ecological Approach integrating Elaeisponic Cultivation and Mycorrhization for enhancing Date Palm productivity, Stress Tolerance, and Disease Mitigation. Third Food Security Call, MME03-1120-210024 (Principal Investigator).