ANALYSIS OF SHORT-TERM LEACHING BEHAVIOR OF PYROLYZED PLASTIC ASH

Balganym Dosmukhambetova, A. Abisheva, I. Zhumadilov, A. Tleubayeva, M. Nurgozhina

2025

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DOI 10.51885/1561-4212_2025_4_301
Data confidence 70 medium
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Abstract

Analyzing short term leaching behavior of pyrolyzed plastic waste is the prerequisite to utilize pyrolysis ash as a construction material. Environmental characteristics of pyrolysis ash were reported in this paper. Chemical and mineralogical characterizations of the pyrolyzed sample were determined using X-ray diffraction (XRD) analysis. Leaching concentrations of Al, Mn, Fe, Ni, Cu, Zn, As, Sr, Cd, Ba, Pb were analyzed using Japanese leaching test method (Japan environment agency notification no.13: JLT-13). The mobility of trace elements was explained by XRF and XRD results that showed SiO2 domination in the ash. Furthermore, the results of the leaching experiments indicated that aluminum and iron were effectively stabilized within the structure. Overall, the concentrations of the selected elements in the final leachates were below the regulatory limits for landfilling. These findings are significant for exploring the potential use of waste materials in geotechnical engineering applications.