Vitrification treatment of municipal solid waste bottom ash

Stabile, Paola; Bello, Marco; Petrelli, Maurizio; Paris, Eleonora; Carroll, M.

doi:10.1016/j.wasman.2019.06.021

Cited by 34 publications

(28 citation statements)

References 41 publications

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“…Gehlenite is also a high temperature phase forming in ceramics and is common in heterogeneous waste materials after treatment at high temperature, like municipal solid waste bottom ash (e.g. Schollbach et al, 2016;Stabile et al 2019). Pure Gehlenite melts at 1595°C at ambient pressure, well over the temperature of these experiments, accounting for the lack of melting of this CDW sample.…”

Section: Thermally-treated Cdwmentioning

confidence: 66%

“…In particular, special glasses, like borosilicate or lead-containing glasses, multilayer glasses (laminated glasses or windshields) or solar panel glasses, cannot be inserted in the normal waste streams, requiring special recycling techniques or missing recycling due to lack of applications or for the presence of contaminants which could be released in the environment. Thus, they are often destined to landfill if a separate recycling line is not available and can represent an important environmental issue (Barbieri et al, 2000;Colombo et al, 2003;Kavouras et al, 2003;Li et al, 2004;Stabile et al, 2019). In these tests, by mixing CDW with 30 wt.% of windshield glass, the amorphous proportion obtained in the thermally treated sample, determined by RIR method, reaches 58 wt.%, compared to 42 wt.% crystalline phases present.…”

Section: Vitrificationmentioning

confidence: 99%

“…cadmium, nickel, etc.) in glass structure and d) decomposes dioxins (Kavouras et al, 2003;Jung et al, 2005;Stabile et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Mineralogical and chemical characterization of CDW as function of particle size and thermal treatments for potential recycling

et al. 2021

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Construction and Demolition Waste (CDW) originating from the rubble produced by the 2016 seismic events in the Marche Region (Central Italy) has been studied, focusing on its mineralogical and chemical characteristics, to investigate its recycling potentials as a component for eco-sustainable building material or in the glass industry. The aim was to obtain a full characterization of the behaviour of this material at high T in order to determine the most advantageous conditions for vitrification, considered as an effective process for volume reduction as well as for immobilization of potentially hazardous elements. Vitrification experiments, carried out with thermal treatments as function of temperature/duration/particle size and aimed at amorphization, were carried out under atmospheric conditions, at different temperatures (1000-1250°C) and durations (2-8 hours). The study demonstrated that mineralogical composition remains homogeneous for grainsize <4 mm, thus suggesting that no sieving is necessary for recycling of the fine fractions, which are the most difficult to treat. Vitrification, although not achieved for the CDW sample up to 1250°C, due to high-Ca and low-Si contents, demonstrated that this CDW can produce an interesting refractory material and a porous/insulating material. However, experiments showed that full vitrification can be easily achieved by mixing urban waste glass and CDW, suggesting applications in the glass industry. Based on the chemical and mineralogical features of the products, other significant upgrading alternatives of recycling the CDW in different fields of applications are highlighted.

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Section: Thermally-treated Cdwmentioning

confidence: 66%

Section: Vitrificationmentioning

confidence: 99%

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Mineralogical and chemical characterization of CDW as function of particle size and thermal treatments for potential recycling

et al. 2021

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“…More severe legal restrictions in all industrial countries must be implemented due to the growing hostility of populations, but more importantly, for the environmental costs of landfill disposals [47]. Furthermore, it is necessary for more hazardous waste components to search for new technologies and applications that can immobilize them in a cementitious matrix, but also in polymeric or glass and glass-ceramic matrices [48][49][50].…”

Section: Discussionmentioning

confidence: 99%

Dimensional, Mechanical and LCA Characterization of Terrazzo Tiles along with Glass and Construction and Demolition Waste (CDW)

Stabile¹,

Radica²,

Ranza³

et al. 2021

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In this work, two types of wastes were introduced, namely, glass from municipal waste and Construction and Demolition Waste (CDW). The latter, which was obtained from rubble generated by the seismic events occurred in Central Italy in 2016, was introduced in two configurations, the single-layer and the double-layer of the cement-based Terrazzo tiles. A maximum of 77% of waste introduction was proven to be possible, therefore creating the possibility of obtaining construction products including high quantities of secondary raw materials, coupled with a valuable aesthetic aspect. The tiles represent a novel CDW upcycling application and follow the EU recommendations to improve the circular economy in the building sector. In particular, the products obtained showed dimensional conformity in the specifications and mechanical performance in the case of double-layer tiles as required by the envisaged use in the flooring (EN 13748-1). A life cycle analysis (LCA) clarified the possible advantages in terms of reduced resource depletion (RD) and global warming potential (GWP). The evaluation at the aggregate/glass matrix interface indicated good performance of the tiles, demonstrating the readiness for industrial production and market introduction.

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“…%, mainly steel), and non-ferrous metals (2-5 wt. %, two-thirds of which is aluminium) [8,9]. IBA is highly heterogeneous and contains potentially leachable soluble salts and heavy metalloids [10].…”

Section: Introductionmentioning

confidence: 99%

Alkali-Activated Binders Using Bottom Ash from Waste-to-Energy Plants and Aluminium Recycling Waste

et al. 2021

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Alkali-activated binders (AABs) stand out as a promising alternative to replace ordinary Portland cement (OPC) due to the possibility of using by-products and wastes in their manufacturing. This paper assessed the potential of weathered bottom ash (WBA) from waste-to-energy plants and PAVAL® (PV), a secondary aluminium recycling process by-product, as precursors of AABs. WBA and PV were mixed at weight ratios of 98/2, 95/5, and 90/10. A mixture of waterglass (WG) and NaOH at different concentrations (4 and 6 M) was used as the alkaline activator solution. The effects of increasing NaOH concentration and PV content were evaluated. Alkali-activated WBA/PV (AA-WBA/PV) binders were obtained. Selective chemical extractions and physicochemical characterization revealed the formation of C-S-H, C-A-S-H, and (N,C)-A-S-H gels. Increasing the NaOH concentration and PV content increased porosity and reduced compressive strength (25.63 to 12.07 MPa). The leaching potential of As and Sb from AA-WBA/PV exceeded the threshold for acceptance in landfills for non-hazardous waste.

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Vitrification treatment of municipal solid waste bottom ash

Cited by 34 publications

References 41 publications

Mineralogical and chemical characterization of CDW as function of particle size and thermal treatments for potential recycling

Mineralogical and chemical characterization of CDW as function of particle size and thermal treatments for potential recycling

Dimensional, Mechanical and LCA Characterization of Terrazzo Tiles along with Glass and Construction and Demolition Waste (CDW)

Alkali-Activated Binders Using Bottom Ash from Waste-to-Energy Plants and Aluminium Recycling Waste

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