Volume 19, Issue 4 p. 961-969
Special Series

The validation of converting pyrite ash-contaminated soil into End-of-Waste by the High-Performance Solidification/Stabilization process application

Petra Scanferla

Corresponding Author

Petra Scanferla

Fondazione Università Ca' Foscari Venezia, Venice, Italy

Petra Scanferla and Loris Calgaro contributed equally to this study.

Address correspondence to [email protected]

Contribution: Conceptualization, Data curation, Funding acquisition, Methodology, Validation, Writing - original draft

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Loris Calgaro

Loris Calgaro

Ca' Foscari University of Venice, Venice Mestre, Italy

Petra Scanferla and Loris Calgaro contributed equally to this study.

Contribution: Conceptualization, Data curation, Formal analysis, Visualization, Writing - original draft, Writing - review & editing

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Roberto Quaresmini

Roberto Quaresmini

Waste and Industry Department, ARPA della Lombardia, Brescia, Italy

Contribution: Data curation, ​Investigation, Writing - original draft

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Martino Zambon

Martino Zambon

TEV Group srl, Venice, Italy

Contribution: Data curation, Formal analysis, Validation

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Roberto Pellay

Roberto Pellay

TEV Group srl, Venice, Italy

Contribution: Conceptualization, Funding acquisition, Project administration, Resources

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Giorgio Ferrari

Giorgio Ferrari

Mapei Group spa, Milan, Italy

Contribution: Formal analysis, Funding acquisition, Project administration, Resources

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Antonio Marcomini

Antonio Marcomini

Ca' Foscari University of Venice, Venice Mestre, Italy

Contribution: Formal analysis, Funding acquisition, Project administration, Supervision

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First published: 28 October 2022
Citations: 1

EDITOR'S NOTE: This article is part of the special series “Remtech Europe 2021: International Approaches to Contamination Management.” The series documents and advances the current state of the practice, with respect to the sustainable management of contaminated sites, high-resolution techniques for characterization, disrupting technologies for remediation of soil and groundwater, and risk assessment frameworks.

Abstract

One of the major challenges to establishing more sustainable management strategies than landfill disposal of metals-contaminated soils is the lack of End-of-Waste (EoW) criteria defined at the European and national levels. Another limitation stems from the scarcity of information on industrial-scale applications of treatment technologies able to obtain safe and reusable materials from such contaminated waste. In this context, the High-Performance Solidification/Stabilization process was applied for the full-scale remediation of pyrite ash-contaminated soil (ca. 24 000 m3), and a dedicated sampling and analytical protocol was developed and implemented to verify if the treated material obtained complied with the general EoW criteria established by article 6 of the Waste Framework Directive 2008/98/EC. The results of the leaching, ecotoxicological, and mechanical tests carried out on representative samples of the treated soil showed that this material (ca. 19 000 m3) could be classified as EoW and thus was deemed reusable both in-situ as filler for the excavation and ex-situ as road construction material. These results improve the knowledge of the performance of a state-of-the-art technique for the treatment of metals-contaminated soil. Furthermore, the developed monitoring plan can support future assessments on the compliance of materials obtained from contaminated soil with the general EoW criteria. Integr Environ Assess Manag 2023;19:961–969. © 2022 SETAC

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

DATA AVAILABILITY STATEMENT

Data on test results are available upon reasonable request to corresponding author Petra Scanferla ([email protected]).