Publication Date:
2022-03-02
Description:
tom
ash samples derived from an oil power plant located in Southern Italy. To achieve this purpose, the mineralogical and
chemical properties of representative bottom ash samples were investigated through the integrated employment of different
analytical techniques, i.e., X-ray powder diffraction, scanning electron microscopy, X-ray fluorescence and atomic absorption
spectrometry. The obtained experimental results show that quartz, alunogen, rhomboclase and potassium hydrogen silicate
are the major crystalline phases of all the analyzed samples. Furthermore, the revealed main ash constituents are SiO2
and
SO3,
with low contents of Fe2O3
and Al2O3,
and little amounts of CaO, Na2O,
K2O,
MgO, P2O5
and TiO2.
Among the trace
elements, very high amounts of heavy metals, i.e., V, Cr, Ni, La, Pb and Mo, were detected. The comparison of the obtained
heavy metal abundance data with those reported in the literature highlights significant differences. Leaching test evidenced
V, Ni and Cr values that make these ashes a potential contamination source for groundwater quality and for soil, nearby the
ash disposal landfills area. All the obtained findings show that these materials are highly harmful for the human health, with
a greater extent for the heavy metal concentrations.
Description:
Published
Description:
217
Description:
6A. Geochimica per l'ambiente e geologia medica
Description:
JCR Journal
Keywords:
Environmental research
;
Heavy metals
;
Risk assessment of bottom ash from fuel oil power plant of Italy
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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