Edgard Gnansounou

Biography

1983 Ing. Civil EPFL
1991 Dr ès Sciences techniques, EPFL
Directeur du Laboratoire de systèmes énergétiques (LASEN) de 2003 à 2008
Dès 2008, Responsable du groupe de Recherche en Bioénergie et Planification énergétique
Co-fondateur du bureau d'étude ENERS Energy Concept
Président de la Fondation SUD (Solidarités Universitaires pour le Développement)

Je suis membre de différentes associations professionnelles parmi lesquelles figuent le Conseil Mondial de l'énergie (CME) et l'Association internationale pour l'économie de l'énergie (AIEE). Comme membre du groupe d'étude du CME sur les vulnérabilités, j'ai développé les métriques utilisées pour évaluer la vulnérabilité énergétique des pays industrialisés.

Depuis janvier 2008 : membre du Comité d'édition du journal international Bioresource Technology.

Depuis 2009: membre du Comité de la "European Biofuels Technology Platform"

Official source

https://people.epfl.ch/edgard.gnansounou

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Advancements in heavy metals removal from effluents employing nano-adsorbents: Way towards cleaner production

Edgard Gnansounou, Baskar Gurunathan

Due to the development in science field which gives not only benefit but also introducesundesirable pollution to the environment. This pollution is due to poor discharge activities of industrial effluents into the soil and water bodies, surface run off from fields of agricultural lands, dumping of untreated wastes by municipalities, and mining activites, which deteriorates the cardinal virtue of our environment and causes menace to human health and life. Heavy metal(s), a natural constituent on earth's crust and economic important mineral, due to its recalcitrant effects creates heavy metal pollution which affects food chain and also reduces the quality of water. For this, many researchers have performed studies to find efficient methods for wastewater remediation. One of the most promising methods from economic point of view is adsorption, which is simple in design, but leads to use of a wide range of adsorbents and ease of operations. Due to advances in nanotechnology, many nanomaterials were used as adsorbents for wastewater remediation, because of their efficiency. Many researchers have reported that nanoadsorbents are unmitigatedly a fruitful solution to address this world's problem. This review presents a potent view on various classes of nanoadsorbents and their application to wastewater treatment. It provides a bird's eye view of the suitability of different types of nanomaterials for remediation of wastewater and Backspace gives up-to-date information about polymer based and silica-based nanoadsorbents.

ACADEMIC PRESS INC ELSEVIER SCIENCE2022

Trends in mitigation of industrial waste: Global health hazards, environmental implications and waste derived economy for environmental sustainability

Edgard Gnansounou

Majority of industries, in order to meet the technological development and consumer demands generate waste. The untreated waste spreads out toxic and harmful substances in the environment which serves as a breeding ground for pathogenic microorganisms thus causing severe health hazards. The three industrial sectors namely food, agriculture, and oil industry are among the primary organic waste producers that affect urban health and economic growth. Conventional treatment generates a significant amount of greenhouse gases which further contributes to global warming. Thus, the use of microbes for utilization of this waste, liberating CO2 offers an indispensable tool. The simultaneous production of value-added products such as bioplastics, biofuels, and biosurfactants increases the economics of the process and contributes to environmental sustainability. This review comprehensively summarized the composition of organic waste generated from the food, agriculture, and oil industry. The linkages between global health hazards of industrial waste and environmental implications have been uncovered. Stare-of-the-art information on their subsequent utilization as a substrate to produce value-added products through bio-routes has been elaborated. The research gaps, economical perspective(s), and future research directions have been identified and discussed to strengthen environmental sustainability.

ELSEVIER2022

Environmental pollutants including emerging contaminants are a growing concern worldwide. Organic wastes, such as food waste, compost, animal manure, crop residues, and sludge are generally used as feedstock. The conventional treatment methodologies (primary and secondary treatment process) do not mitigate or remove pollutants effectively. Hence, an effective, low-cost, and environmentally friendly tertiary treatment process is an urgent need. Biochar finds interesting applications in environmental processes like pollutant remediation, greenhouse gas mitigation, and wastewater treatment. Studies have shown that different types of adsorbents (biochars) like, native and engineered biochar are being used in the removal or mitigation of heavy metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls, pesticides, disinfectants, polychlorinated dibenzofurans, and dibenzo-p-dioxins from contaminated sites for environmental management. The review discusses ample studies which can offer solutions for environmental sustenance and management and the emerging trends and techno-economic prospectives of biochar for sustainable environmental management.

2021