The Self-sustained High temperature Synthesis (SHS) technology as novel approach in the management of asbestos waste

Laura Gaggero; Maurizio Ferretti

doi:10.1016/j.jenvman.2017.09.019

The Self-sustained High temperature Synthesis (SHS) technology as novel approach in the management of asbestos waste

J Environ Manage. 2018 Jun 15:216:246-256. doi: 10.1016/j.jenvman.2017.09.019. Epub 2017 Sep 21.

Authors

Laura Gaggero¹, Maurizio Ferretti²

Affiliations

¹ Department of Earth, Environment and Life Sciences, DISTAV, University of Genoa, Corso Europa 26, I-16132, Genoa, Italy; RIT4Waste, Center of Research, Innovation and Technology for Waste, University of Genoa, Italy. Electronic address: gaggero@dipteris.unige.it.
² Department of Chemistry and Industrial Chemistry, DCCI, University of Genoa, Via Dodecaneso 31, I-16146, Genoa, Italy; RIT4Waste, Center of Research, Innovation and Technology for Waste, University of Genoa, Italy.

PMID: 28943059
DOI: 10.1016/j.jenvman.2017.09.019

Abstract

The SHS technique was experimented in chrysotile breakdown. By means of two reactions such as Mg₃Si₂O₅(OH)₄ + Fe₂O₃ + 3 Mg and 2Mg₃Si₂O₅(OH)₄ + Fe₃O₄ + 4 Mg the chrysotile was completely converted into forsterite-rich olivine. Different mixtures of hematite + Mg and magnetite + Mg were tested with chrysotile to establish the maximum chrysotile amount in order to allow the reaction. In comparison with conventional thermal treatments, the SHS process is characterized by a fast reaction, needs low activation energy and the apparatus is simple. For these reasons, the asbestos neutralisation is carried out with positive balance of time and costs of the process. Furthermore, the combustion product can be re-used as secondary material.

Keywords: Asbestos waste; Combustion synthesis; Fibres; Neutralisation; SHS; Waste management.

MeSH terms

Asbestos*
Asbestos, Serpentine
Ferric Compounds
Refuse Disposal*
Temperature

Substances

Asbestos, Serpentine
Ferric Compounds
Asbestos