Title: Potentially toxic elements in bottom ash from hazardous waste incinerators: an integrated approach to assess the potential release in relation to solid-phase characteristics
Authors: Dung, Tran Thi Thu ×
Vassilieva, Elvira
Golreihan, Asefeh
Phung, Nguyen Ky
Swennen, Rudy
Cappuyns, Valérie #
Issue Date: May-2016
Publisher: Springer-Verlag
Series Title: Journal of Material Cycles and Waste Management vol:First online: 4 May 2016
Abstract: Understanding the chemical and mineralogical characteristics of bottom ash (BA) containing Potentially
Toxic Elements (PTEs, e.g., As, Cd, Co, Cu, Cr, Mo, Ni,
Pb and Zn) is necessary because it provides information to
the potential environmental impacts and possible management
options. In this study, we used an integrated
approach, combining solid phase characterization [by
X-ray diffraction (XRD) and Field Emission Gun Electron
Probe Micro Analysis (FEG-EPMA)] and leaching tests.
XRD analysis for mineralogical characterization was used
but turned out not always to allow detecting discrete
mineral phases containing PTEs. Therefore, FEG-EPMA,
which is less often used for waste characterization, was
used to provide information on the elemental associations
focusing on some PTE retaining phases. This allowed
direct solid phase characterization and investigation of the
relationship between discrete and bulk solid-phase characteristics
and PTE leaching behavior from BA. Some
environmental scenarios related to PTE release were also
assessed. Liming can reduce the PTE concentrations in the
leachates to a desirable level, but the release of Mo from
one of the BA samples would still be of concern. Our
results indicated that attention should be paid to the safe
disposal of this BA to avoid leaching of Mo and contamination of the environment
ISSN: 1438-4957
Publication status: accepted
KU Leuven publication type: IT
Appears in Collections:Department of ECON-CEDON, Campus Brussels
Department of Earth and Environmental Sciences
Division of Geology
Faculty of Economics and Business (FEB) - miscellaneous
× corresponding author
# (joint) last author

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