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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2023
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47480004010 https://www.redalyc.org/journal/474/47480004010/ https://www.redalyc.org/journal/474/47480004010/html/ https://www.redalyc.org/journal/474/47480004010/47480004010.epub https://www.redalyc.org/journal/474/47480004010/movil |
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Table of Contents:
- Heavy metals and sulfate removal from acid mine drainage using steel mill slag in a rotational mixing device C. R. Blanco-Zúñiga C. N. Orjuela-Fajardo N. Rojas-Arias Ingeniería heavy metals Steel mill slag sulfates and total Fe acid mine drainage (AMD) rotational mixing device The steel mill slag (SMS) production in converter furnaces is one of the main by-products generated during steel production. This waste material is usually composed of different metal oxides that include basic cations such Ca, Mn, and Mg. These cations can favor alkalinity and heavy metals removal when they are partially dissolved in a contaminant solution such as acid mine drainage (AMD). This work aims to study the potential use of SMS produced in converter furnaces in the mining-steel region of Boyacá- Colombia as an alternative to pre-treat AMD produced by coal mining in the zone. The SMS were separated into two particle sizes by screening, and these were put in contact with AMD samples in a rotational mixing system for 36 hours. The pH, total Fe (Fe2+, 3+), SO4 2-, and heavy metals concentration were analyzed at 0, 12, 24 and 36 hours’ time intervals. The results show that SMS produced in the region is an optimal low-cost alternative to treat AMD, allowing complete heavy metals removal in the first 12 hours of treatment. Furthermore, Fe and SO4 2- removal were observed, reaching 99.9 % and 85 %, respectively, at 36 hours. The application of rotational mixing allows complete mixing between AMD and SMS, reducing the possible precipitates adhesion on the surface, limiting the reactivity losses. This mixing treatment device favors continuous use, avoiding the application of cleaning stages that could be required in the future for optimal functioning. 2023 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47480004010 https://www.redalyc.org/journal/474/47480004010/ https://www.redalyc.org/journal/474/47480004010/html/ https://www.redalyc.org/journal/474/47480004010/47480004010.epub https://www.redalyc.org/journal/474/47480004010/movil 10.22201/icat.24486736e.2023.21.3.1870 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.3 Vol.21