Structural and Textural Characteristics of Municipal Solid Waste Incineration Bottom Ash Subjected to Periodic Seasoning

Barbara Dutka, Simona Rada, Katarzyna Godyń (), Dumitrita Moldovan, Ramona Ioana Chelcea and Maciej Tram
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Barbara Dutka: Strata Mechanics Research Institute, Polish Academy of Sciences, 30-059 Krakow, Poland
Simona Rada: Department of Physics and Chemistry, Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Katarzyna Godyń: Strata Mechanics Research Institute, Polish Academy of Sciences, 30-059 Krakow, Poland
Dumitrita Moldovan: Department of Physics and Chemistry, Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Ramona Ioana Chelcea: Department of Physics and Chemistry, Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Maciej Tram: Strata Mechanics Research Institute, Polish Academy of Sciences, 30-059 Krakow, Poland

Sustainability, 2024, vol. 16, issue 21, 1-21

Abstract: The objective of this study was to determine the structural and textural description of municipal solid waste incineration (MSWI) bottom ash that was subjected to a six-month seasoning process. Bottom ash samples, with a particle size fraction of 0.063–0.1 mm, were seasoned in a closed landfill and collected for laboratory analyses at monthly intervals. The research focused on determining the structural parameters, using methods such as nuclear magnetic resonance spectroscopy ( 1 H NMR), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), and the textural parameters, using low-pressure nitrogen adsorption (LPNA) at −196.15 °C. The analyses of the porous structure of the bottom ash samples revealed differences in texture of ASH 1 to ASH 6, specifically in the pore volume (micro- and mesopores), specific surface area, and pore size distribution. Changes in the structural and porous characteristics of the samples were attributed to the duration of the seasoning process. The results of the structural analysis of the bottom ash suggest its application in the concrete industry, potentially enhancing the long-term mechanical strength of concrete. The results of the textural analysis indicate the possible use of MSWI bottom ash in environmental applications, as the internal surface area could be further developed.

Keywords: MSWI bottom ash; structure; texture; low-pressure nitrogen adsorption; surface area; pore volume; 1 H NMR; XRD; FTIR; UV-Vis (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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