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Title: Leaching behavior of selected trace elements in coal fly ash samples from Yenikoy coal-fired power plants
Authors: Akar, Gül
Polat, Mehmet
Galecki, Greg
Üner, İpekoğlu
Keywords: Coal fly ash
Coal-fired power plants
Trace element leaching
Issue Date: Dec-2012
Publisher: Elsevier Ltd.
Source: Akar, G., Polat, M., Galecki, G. and İpekoğlu, Ü. (2012). Leaching behavior of selected trace elements in coal fly ash samples from Yenikoy coal-fired power plants. Fuel Processing Technology, 104, 50-56. doi:10.1016/j.fuproc.2012.06.026
Abstract: Short-term leaching test results of alkaline fly ash from Yenikoy coal-fired power plant were reported in this paper. ASTM D-3987-85 and TCLP-1311 test methods were applied to determine leaching behavior of selected elements namely, Fe, Ca, Cu, Co, Cd, Mn, Ni, Pb Zn, and Cr (VI) at different particle size fractions and test conditions. Chemical, mineralogical and morphological characterizations of ash samples were also performed using chemical, XRD and SEM-EDS analysis methods. The results showed that CaO dominates in the Yenikoy fly ash sample which directly affects the mobility of trace elements by determining the pH of the leaching medium. Higher mobility values of Cd, Co Cu, Pb, Ni and Zn elements were observed for TCLP-1311 procedure. The concentration of these elements in leachates showed a tendency to increase by decreasing particle size. Overall results suggested that the amount of the selected elements in the final leachates of both tests was lower than the limit values of landfill regulations except Cr (VI).
ISSN: 0378-3820
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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