LEACHING TEST OF VITRIFIED FLY ASH AND CERAMIC SLAG FROM AN INCINERATOR OF MUNICIPAL SOLID WASTE (MSW) TREATED WITH Ca(OH)2 AT DIFFERENT CONCENTRATIONS AND WITH MARLSTONE

Authors

  • Livia Vittori Antisari Department of Agroenvironmental Sciences and Technologies, University of Bologna, Soil Study and Analysis Experimental Centre, Bologna
  • Francesca Pontalti Department of Agroenvironmental Sciences and Technologies, University of Bologna, Soil Study and Analysis Experimental Centre, Bologna
  • Andrea Simoni Department of Agroenvironmental Sciences and Technologies, University of Bologna, Soil Study and Analysis Experimental Centre, Bologna
  • Gilmo Vianello Department of Agroenvironmental Sciences and Technologies, University of Bologna, Soil Study and Analysis Experimental Centre, Bologna

DOI:

https://doi.org/10.6092/issn.2281-4485/3806

Keywords:

incinerator ashes, in-situ remediation, leaching test, Ca(OH)2, smectitic marlstone, environmental restoration

Abstract

A public property site, situated on an alluvial terrace of the Idice Stream (Emilia Romagna Region-Italy) was contaminated by a layer of waste, constituted by vitrified fly ashes and ceramic materials produced by an incinerator of municipal solid waste. The waste had high contents of heavy metals which exceeded the Italian legal concentration limits for Cd, Cu, Pb and Zn (D. Lgs. 152/06, all. 5, tab.1). The in-situ remediation of the area was possible. In this study, alternative materials than the Portland cement were tested for the environmental restoration and the further naturalization of the area. Leaching tests were carried out treating the ashes with different concentrations of hydrated lime (CaOH2) and also with lime at 20% concentration and smectic marlstone. At the end of the leaching test, most of the heavy metals in the waste were immobilized in the waste by the lime/marlstone treatment.

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Published

2010-12-19

How to Cite

Vittori Antisari, L., Pontalti, F., Simoni, A., & Vianello, G. (2010). LEACHING TEST OF VITRIFIED FLY ASH AND CERAMIC SLAG FROM AN INCINERATOR OF MUNICIPAL SOLID WASTE (MSW) TREATED WITH Ca(OH)2 AT DIFFERENT CONCENTRATIONS AND WITH MARLSTONE. EQA - International Journal of Environmental Quality, 5(5), 23–32. https://doi.org/10.6092/issn.2281-4485/3806

Issue

Vol. 5 (2010)

Section

Articles

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Copyright (c) 2010 Livia Vittori Antisari, Francesca Pontalti, Andrea Simoni, Gilmo Vianello

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