A promising process, often indicated as geopolymerization, describes the formation of an aluminosilicate amorphous matrix where Ca is absent or contained in low amount. Geopolymers are obtained from an aluminosilicate powder activated by alkaline solutions and the synthesis process involves three separate stages: dissolution, condensation and polymerization. Sodium silicate is used for the activation of many kinds of aluminosilicate precursors and hazardous wastes. In the present work, three case studies of solid and liquid, hazardous and non-hazardous wastes added in geopolymers will be presented. The results show the versatility of this technique and the possibility to obtain geopolymers from aluminosilicate-based waste and to immobilize their hazardous ions.

Wastes materials in geopolymers / Lancellotti, I.; Ponzoni, C.; Barbieri, L.; Leonelli, C.. - (2015), pp. 115-119. (Intervento presentato al convegno 3rd International Conference on Wastes: Solutions, Treatments and Opportunities, Wastes 2015 tenutosi a Viana do Castelo; Portugal nel 14 September 2015 through 16 September 2015) [10.1201/b18853-21].

Wastes materials in geopolymers

Lancellotti I.
;
Ponzoni C.
Investigation
;
Barbieri L.
Writing – Review & Editing
;
Leonelli C.
Supervision
2015

Abstract

A promising process, often indicated as geopolymerization, describes the formation of an aluminosilicate amorphous matrix where Ca is absent or contained in low amount. Geopolymers are obtained from an aluminosilicate powder activated by alkaline solutions and the synthesis process involves three separate stages: dissolution, condensation and polymerization. Sodium silicate is used for the activation of many kinds of aluminosilicate precursors and hazardous wastes. In the present work, three case studies of solid and liquid, hazardous and non-hazardous wastes added in geopolymers will be presented. The results show the versatility of this technique and the possibility to obtain geopolymers from aluminosilicate-based waste and to immobilize their hazardous ions.
2015
3rd International Conference on Wastes: Solutions, Treatments and Opportunities, Wastes 2015
Viana do Castelo; Portugal
14 September 2015 through 16 September 2015
115
119
Lancellotti, I.; Ponzoni, C.; Barbieri, L.; Leonelli, C.
Wastes materials in geopolymers / Lancellotti, I.; Ponzoni, C.; Barbieri, L.; Leonelli, C.. - (2015), pp. 115-119. (Intervento presentato al convegno 3rd International Conference on Wastes: Solutions, Treatments and Opportunities, Wastes 2015 tenutosi a Viana do Castelo; Portugal nel 14 September 2015 through 16 September 2015) [10.1201/b18853-21].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1221461
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