Disposal of Bottom Ash from the Incineration of Hazardous Waste in Two Different Mineral Matrixes

作者：Rozek P; Krol M^*; Knapik A; Mozgawa W

来源：Environmental Progress & Sustainable Energy, 2017, 36(4): 1074-1082.

DOI：10.1002/ep.12575

• immobilization
• solid waste
• hazardous waste
• heavy metals

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.

• 出版日期2017-7