主催: Japan Society of Material Cycles and Waste Management
Municipal solid waste incineration air pollution control (APC) residues contain high level of soluble salts (e.g. chlorides), heavy metals (e.g. Hg, Cd, Pb, etc.) and persistent organic pollutants (PHAs, dioxins, etc.) and, thus, they are considered as hazardous waste. Recent research on weathering or aging of fly ash has demonstrated that this treatment can possibly decrease the leaching of heavy metals, making it suitable for either landfilling or reusing. However, there are still several issues regarding this technology that need to be clarified, such as the optimum conditions for heavy metal immobilization and the mechanisms involved. Thus, this paper aims to report on the state of the art research on the weathering of APC residues that are currently available in the literature and discuss the topics that need to be addressed in the future.
