Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/27128
Title: Stabilisation/solidification of APC residues from MSW incineration with hydraulic binders and chemical additives
Authors: Quina, Margarida J. 
Bordado, João C. M. 
Quinta-Ferreira, Rosa M. 
Keywords: Stabilisation/solidification; APC residues; Incineration; Phosphates; Silicates; Leaching
Issue Date: 15-Jan-2014
Publisher: Elsevier
Keywords: Stabilisation/solidification; APC residues; Incineration; Phosphates; Silicates; Leaching
Issue Date: 15-Jan-2014
Publisher: Elsevier
Citation: QUINA, Margarida J.; BORDADO, João C. M.; QUINTA-FERREIRA, Rosa M. - Stabilisation/solidification of APC residues from MSW incineration with hydraulic binders and chemical additives. "Journal of Hazardous Materials". ISSN 0304-3894. Vol. 264 (2014) p. 107-116
Abstract: This study focuses on the stabilisation/solidification (S/S) treatment of air pollution control (APC) residues from municipal solid waste (MSW) incineration. Six formulations (T1–T6) were tested based on different cements as binders, for the immobilisation of pollutants and to prevent their entering into the environment at unacceptable rates. Soluble phosphates and silicates were considered in some cases to fix heavy metals. The performance of T1–T6 products was measured in terms of initial and final setting times, mechanical strength, total availability and leaching from S/S products. Two monolithic leaching tests were used to estimate emissions of pollutants over 48 h and 64 days. The results showed that the setting time was reduced when soluble phosphates were used. Moreover, although all the treatments have met the threshold of 1 MPa for unconfined compressive strength, this parameter was significantly reduced due to matrix dissolution during immersion. After three cycles of leaching, the limit of 10% for solubilisation was exceeded for all treatments with the exception of T5 (with phosphates). This study demonstrated that the S/S treatment used at the industrial level can be improved with respect to toxic heavy metals, by using soluble silicates or phosphates, but not regarding soluble salts.
URI: http://hdl.handle.net/10316/27128
ISSN: 0304-3894
DOI: 10.1016/j.jhazmat.2013.11.014
Rights: openAccess
Appears in Collections:I&D CIEPQPF - Artigos em Revistas Internacionais
FCTUC Eng.Química - Artigos em Revistas Internacionais

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