SHS Web Conf.
Volume 100, 2021IV International Scientific Congress “Society of Ambient Intelligence – 2021” (ISCSAI 2021)
|Number of page(s)||7|
|Section||Ecology and Living Space|
|Published online||25 March 2021|
Treatment of Mining and Thermoelectric Waste Through the Geopolymerization Process
1 Metallurgist Engineer from the Jorge Basadre Grohmann National University
2 Principal professor of the Professional School of Metallurgical and Materials Engineering of the Jorge Basadre Grohmann National University
3 Rector of the Jorge Basadre Grohmann National University.
4 Director of the Office of Innovation, Technology Transfer and Intellectual Property at the National Intercultural University of Quillabamba
* Corresponding author: firstname.lastname@example.org
Currently, energy and extraction activities generate large amounts of highly polluting waste, so there is a need for sustainable and environmentally friendly technologies. The aim of the study is to treat mining tailings and fly ash through the process of geopolymerization. The samples studied were obtained from the Toquepala mine, Tacna and from the ENGIE-Moquegua hydroelectric plant (Peru). The methodology was based on two stages, the first characterization of Fly Ash (FA) and mine tailings (MT) by EDX chemical characterization, SEM morphology, the second was prepared mixtures of MT and FA in 10 M alkaline solution, cured in 35 days at room temperature and the characterization of the geopolymer by organoleptic analysis, SEM and TCLP. The first stage shows high aluminosilicate content 20.44% Al2O3 and 53.39 % SiO2 for (MT); 22.11% Al2O3 and 51.76% SiO2 for (FA), presents metal and pyrite content. In the second stage, the samples show health and environmental harmlessness, with the formation of tetragonal structures typical of the geopolymer, the samples show a significant reduction of Sr, Ca, Fe, Pb, Ba, Be, and Cu, demonstrating the effectiveness of treatment by means of geopolymerization opening a new field for the environmental passive treatment.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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