Autor segons l'article: Capelo-Avilés S; Tomazini de Oliveira R; Gallo Stampino II; Gispert-Guirado F; Casals-Terré A; Giancola S; Galán-Mascarós JR
Departament: Química Física i Inorgànica
Autor/s de la URV: Capelo Avilés, Santiago Alexander / Gispert Guirado, Francesc / GUIRADO PAGÉS, FRANCISCO
Paraules clau: Steel slags carbonation Industrial wastes valorisation Co mineralization 2 Co capture and utilization 2 Circular economy
Resum: Escalating industrial CO2 emissions necessitate innovative carbon capture and utilization strategies. This study explores the potential of mineral-carbonation of steelmaking slags, particularly White Slag (WS) and various Refractory Wastes (RWs), to mitigate CO2 emissions and valorize industrial wastes. Experiments were performed with waste materials from the production lines at CELSA (Barcelona, Spain). We delved into direct aqueous carbonation, evaluating the performance and characteristics of these wastes under different experimental conditions. Our findings reveal that all slags can effectively sequester CO2. This process is effective not only for pure CO2 but also for diluted flue gases under mild conditions (≤ 100 ºC, ≤ 6 bar). Specifically, WS exhibited peak CO2 sequestration capacities (SC) of 359.79 gCO2/kgslag (pure CO2) and 276.65 gCO2/kgslag (diluted flue gas). In contrast, the RWs presented different kinetic, reaching a maximum SC of 311 gCO2/kgslag after prolonged times. Given the large inhomogeneity of RWs, individual analysis of distinct RW fractions revealed significant variations in carbonation performance. Tundish RW exhibited the highest CO2 sequestration capacity, emphasizing the importance of waste source and mineral composition in the carbonation. Chemical and morphological evaluations confirmed the transformation of CaO to CaCO3, with MgO remaining largely inert. Additionally, the process indicated potential environmental benefits by reducing the mobility of toxic metals, particularly Pb, suggesting an ancillary avenue for waste treatment. This study underscores the utility of CO2 mineralization as a dual-benefit approach within the circular economy framework, offering insights into its application for sustainable waste management and CO2 emission reduction in the steel industry.
Àrees temàtiques: Waste management and disposal Química Process chemistry and technology Engineering, chemical Engenharias ii Ciências ambientais Ciência de alimentos Chemistry, multidisciplinary Chemical engineering (miscellaneous) Biodiversidade
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: santiagoalexander.capelo@estudiants.urv.cat
Data d'alta del registre: 2024-10-05
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Referència a l'article segons font original: Journal Of Co2 Utilization. 82
Referència de l'ítem segons les normes APA: Capelo-Avilés S; Tomazini de Oliveira R; Gallo Stampino II; Gispert-Guirado F; Casals-Terré A; Giancola S; Galán-Mascarós JR (2024). A thorough assessment of mineral carbonation of steel slag and refractory waste. Journal Of Co2 Utilization, 82(), -. DOI: 10.1016/j.jcou.2024.102770
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2024
Tipus de publicació: Journal Publications
Repositori URV