Una contribución a la economía circular: cenizas volantes de incineración de residuos sólidos urbanos para producir aglutinantes ecológicos = A contribution to the circular economy: municipal solid waste incineration fly ash to produce eco-friendly binders
DOI: https://doi.org/10.20868/ade.2022.5021
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Los residuos sólidos urbanos son uno de los problemas medioambientales más acuciantes a los que se enfrenta el mundo. Hoy en día, la incineración se considera la tecnología más eficaz para tratarlos. Sin embargo, tras el proceso de incineración, cerca del 25% de la masa total inicial de residuos son cenizas, que deben eliminarse en vertederos. Las tendencias recientes sugieren que es posible seguir avanzando en la eficiencia de los recursos convirtiendo los residuos en un recurso y cerrando así el ciclo en una economía circular. Las cenizas volantes pueden utilizarse como sustituto de los recursos naturales en la construcción, como áridos o en la fabricación de nuevos materiales. En particular, estas cenizas volantes contienen elementos como Ca, Si y Al, que permiten su utilización como materia prima para la fabricación de ligantes. En el presente trabajo, se presentarán los resultados obtenidos a partir de la caracterización fisicoquímica de las cenizas volantes. El objetivo de la investigación es explorar la viabilidad del uso de estas cenizas volantes como materia prima en la fabricación de ligantes ecológicos.
Abstract
Municipal solid waste is one of the most pressing environmental problems the world faces. Nowadays, incineration is considered to be the most effective technology for treating it. However, after the incineration process, close to 25% of the initial total mass of waste is ash, which has to be placed of in landfills. Recent trends suggest that further progress in resource efficiency is possible by turning waste into a resource and thus closing the loop in a circular economy. Fly ash can be utilized as a substitute for natural resources in construction, as in aggregates or in the manufacture of new materials. In particular, these fly ashes contain elements such as Ca, Si and Al, which make it possible for them to be used as a raw material to manufacture binders. In the present work, the results obtained from the physicochemical characterization of fly ashes will be presented. The research aims to explore the feasibility of using this fly ash as raw material in the manufacture of eco-friendly binders.
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