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Disposal of bottom ash from the incineration of hazardous waste in two different mineral matrixes
Author(s) -
Rożek P.,
Król M.,
Knapik A.,
Mozgawa W.
Publication year - 2017
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12575
Subject(s) - bottom ash , incineration , hazardous waste , leaching (pedology) , waste management , incinerator bottom ash , portland cement , cementitious , heavy metals , environmental science , cement , fly ash , metallurgy , chemistry , materials science , environmental chemistry , soil water , engineering , soil science
In this study four incineration residues (bottom ash), classified as hazardous wastes on the basis of a leaching test, have been investigated. Analysis of the chemical composition proved to have high contents of heavy metals that during storage could potentially be released into the environment. Therefore, the waste has been subjected to solidification/stabilization (i.e., one of the methods of immobilization of heavy metals) in two ways: with Portland cement and alkali‐activated granulated blast furnace slag. It was assumed that bottom ashes will constitute 30% by weight of the dry ingredients. It has been found that although the amount of heavy metals introduced into a matrix along with the mineral waste is significant, the increase in elution of heavy metal ions in the environment is not a consequence. The use of bottom ash from the incineration of hazardous waste may even limit the release of heavy metal ions from cementitious materials. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1074–1082, 2017