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SUMMARY:From agri-food waste to energy and materials: challenges and opportunities of thermal conversion
DESCRIPTION:Il seminario\, intitolato “From agri-food waste to energy and materials: challenges and opportunities of thermal conversion“ si terrà martedì 24 marzo alle ore 10:00\, presso l’aula Grandori\, e sarà tenuto da Izabella Maj\, Assistant Professor presso la Silesian University of Technology di Gliwice (Polonia). \nSpeaker’s bioIzabella Maj\, PhD\, is an Assistant Professor at the Silesian University of Technology in Gliwice\, Poland\, within the Faculty of Energy and Environmental Engineering. Her research focuses on the thermal conversion of biomass and waste\, high-temperature corrosion\, ash characterization and utilization\, and emission control in energy systems. A key theme of her current work is the sustainable and safe utilization of animal-origin waste—such as poultry litter and cattle manure—within waste-to-energy and circular economy frameworks. She is currently the Principal Investigator of a project funded by the National Science Centre (Poland)\, investigating the influence of aluminosilicate additives on ash properties and high-temperature corrosion during biomass combustion. \nAbstractThe thermal conversion of agri-food waste\, particularly animal-origin waste\, represents a promising pathway for sustainable waste management and energy recovery within the circular economy framework. Materials such as poultry litter and cattle manure are produced in large quantities worldwide and pose significant environmental challenges when managed through conventional land application\, including greenhouse gas emissions\, nutrient runoff\, and the spread of pathogens and antibiotic residues. Thermal treatment offers an effective alternative\, enabling energy recovery while reducing environmental and sanitary risks. \nThe presentation addresses the combustion and gasification of animal-origin waste\, with particular attention to ash behavior\, high-temperature corrosion\, and valorization pathways for process by-products. Special focus is given to chlorine-induced corrosion mechanisms in power boilers\, which represent one of the main operational barriers in waste-to-energy systems. Experimental corrosion studies conducted on boiler steels under controlled temperatures are presented\, supported by detailed microstructural and kinetic analyses. \nThe role of aluminosilicate additives—such as halloysite\, kaolin\, and bentonite—in modifying ash chemistry is also discussed. Results show that targeted ash modification can significantly influence ash melting behavior\, suppress low-temperature melt formation\, and reduce corrosion rates by improving oxide scale integrity. Beyond corrosion mitigation\, potential utilization routes for biomass ashes are explored\, including applications in additive manufacturing (3D printing).
URL:https://www.dica.polimi.it/it/evento/from-agri-food-waste-to-energy-and-materials-challenges-and-opportunities-of-thermal-conversion/
CATEGORIES:Seminari e conferenze
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