E3S Web Conf.
Volume 44, 201810th Conference on Interdisciplinary Problems in Environmental Protection and Engineering EKO-DOK 2018
|Number of page(s)||8|
|Published online||03 July 2018|
Stabilization of Ash and Slag from Combustion of Medical Waste in the Geopolymers Matrix
Cracow University of Technology, Faculty of Mechanical Engineering, Institute of Materials Engineering, 37 Jana Pawła II Av., 31-864 Cracow, Poland
2 AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Department of Physical Metallurgy & Powder Metallurgy, 30 Mickiewicza Av., 30-059 Cracow, Poland
Corresponding author: firstname.lastname@example.org
This paper regards the possibility of using geopolymer matrix to immobilize heavy metals present in ash and slag from combustion of medical waste. In the related research one used the fly ash from coal combustion in one Polish CHP plant and the waste from two Polish incineration plants. It was studied if the above-named waste materials are useful in the process of alkali-activation. Therefore, two sets of geopolymer mixtures were prepared containing 60 and 50% of ash and slag from the combustion of medical waste. The remaining content was fly ash from coal combustion. The alkali-activation was conducted by means of 14M solution of NaOH and sodium water glass. The samples, whose dimensions were in accordance with the EN 206-1 norm, were subjected to 75°C for 24 h. According to the results, the geopolymer matrix is able to immobilize heavy metals and retain compressive strength resembling that of C8/10 type concrete.
© The Authors, published by EDP Sciences, 2018
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