Chemistry and Mineralogy of Industrial Residues

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".

Deadline for manuscript submissions: closed (27 January 2023) | Viewed by 2875

Special Issue Editor


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Guest Editor
Dipartimento di Scienze della Terra, Università degli Studi di Torino, 10124 Turin, Italy
Interests: mineralogy, crystallography, bottom ashes, waste disposal

Special Issue Information

Dear Colleagues,

The transition to a green economy cannot ignore the fact that any form of economic development relies on actual materials. Materials are at the basis of any industry, and their lifecycle plays a significant role in economic assessments. Within a material’s cycle, industrial residues are unavoidable and most often undesired byproducts. These are critical in several ways, such as their toxic potential and the need for their adequate disposal. Nevertheless, efforts are ongoing to identify ways we can exploit these byproducts by reusing and recycling them. However, in order to achieve this, we must first achieve full knowledge of the chemistry and reactivity of industrial waste. The process of acquiring this necessary knowledge begins with the characterization of their constituents, which in most cases do have a natural mineralogical counterpart. In this Special Issue, we aim to collect contributions, especially reviews of the present state of the art in the chemical composition and reactions of industrial residues, spanning from the characterization and analytic techniques of investigation to reuse and recycling and toxicology matters. The main focus is applied sciences, but basic investigations of the chemical, structural, and thermodynamic behavior of minerals in industrial residues are welcomed.

Prof. Dr. Mario Tribaudino
Guest Editor

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Keywords

  • industrial materials
  • mineralogical constitution 
  • reactivity 
  • recycling 
  • remediation 
  • bottom and fly ashes 
  • metal recovery

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Published Papers (1 paper)

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Research

15 pages, 2023 KiB  
Article
MSWI Fly Ash Multiple Washing: Kinetics of Dissolution in Water, as Function of Time, Temperature and Dilution
by Caterina Caviglia, Enrico Destefanis, Linda Pastero, Davide Bernasconi, Costanza Bonadiman and Alessandro Pavese
Minerals 2022, 12(6), 742; https://doi.org/10.3390/min12060742 - 10 Jun 2022
Cited by 7 | Viewed by 2453
Abstract
Municipal solid waste incineration fly ash (FA) can represent a sustainable supply of supplementary material to the construction industries if it is pre-treated to remove hazardous substances such as chloride, sulfate, and heavy metals. In this paper, the phenomenology associated with a water [...] Read more.
Municipal solid waste incineration fly ash (FA) can represent a sustainable supply of supplementary material to the construction industries if it is pre-treated to remove hazardous substances such as chloride, sulfate, and heavy metals. In this paper, the phenomenology associated with a water washing multi-cycle treatment of FA is investigated, focusing attention upon the mineral dissolution process. The efficacy of the treatment is assessed by leaching tests, according to the European Standard, and discussed in light of the occurring mineral phases. The water-to-solid (L/S) ratio is a crucial parameter, along with the number of washing cycles, for removing halite and sylvite, whereas quartz, calcite, anhydrite, and an amorphous phase remain in the solid residue. The sequential extraction method and dissolution kinetics modelling provide further elements to interpret leaching processes, and suggest that dissolution takes place through a two-step mechanism. Altogether, multi-step washing with L/S = 5 is effective in reducing contaminants under the legal limits for non-hazardous waste disposal, while the legal limits for non-reactive or reusable material cannot be completely reached, owing to sulfate and some heavy metals which still leached out from the residue. Full article
(This article belongs to the Special Issue Chemistry and Mineralogy of Industrial Residues)
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