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Brazilian Coal Tailings Projects: Advanced Study of Sustainable Using FIB-SEM and HR-TEM

Author

Listed:
  • Marcos L. S. Oliveira

    (Department of Civil and Environmental Engineering, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla 080002, Colombia
    Department of Sanitary and Environmental Engineering, Federal University of Santa Cataria, UFSC, Campus Universitário Trindade, Florianópolis 87504-200, SC, Brazil)

  • Diana Pinto

    (Department of Civil and Environmental Engineering, Universidad de la Costa, CUC, Calle 58 # 55-66, Barranquilla 080002, Colombia)

  • Maria Eliza Nagel-Hassemer

    (Department of Sanitary and Environmental Engineering, Federal University of Santa Cataria, UFSC, Campus Universitário Trindade, Florianópolis 87504-200, SC, Brazil)

  • Leila Dal Moro

    (ATITUS Educação, Passo Fundo 99070-220, RS, Brazil)

  • Giana de Vargas Mores

    (ATITUS Educação, Passo Fundo 99070-220, RS, Brazil)

  • Brian William Bodah

    (ATITUS Educação, Passo Fundo 99070-220, RS, Brazil
    Thaines and Bodah Center for Education and Development, 840 South Meadowlark Lane, Othello, WA 99344, USA
    Yakima Valley College, South 16th Avenue & Nob Hill Boulevard, Yakima, WA 98902, USA)

  • Alcindo Neckel

    (ATITUS Educação, Passo Fundo 99070-220, RS, Brazil)

Abstract

The objective of this study is to obtain a more detailed assessment of particles that contain rare-earth elements (REEs) in abandoned deposits of Brazilian fine coal tailings (BFCTs), so as to aid current coal mining industries in the identification of methodologies for extracting such elements (Santa Catarina State, Brazil). The BFCT areas were sampled for traditional mineralogical analysis by X-ray Diffraction, Raman Spectroscopy and nanomineralogy by a dual beam focused ion beam (FIB) coupled with field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM) coupled with an energy dispersive X-ray microanalysis system (EDS). The results show that the smaller the sampled coal fines were, the higher the proportion of rare-earth elements they contained. Although the concentration of REEs is below what would normally be considered an economic grade, the fact that these deposits are already ground and close to the surface negate the need for mining (only uncovering). This makes it significantly easier for REEs to be extracted. In addition, owing to their proximity to road and rail transport in the regions under study, the opportunity exists for such resources (BFCTs) to be utilized as a secondary market as opposed to simply being discarded as has been done in the past.

Suggested Citation

  • Marcos L. S. Oliveira & Diana Pinto & Maria Eliza Nagel-Hassemer & Leila Dal Moro & Giana de Vargas Mores & Brian William Bodah & Alcindo Neckel, 2022. "Brazilian Coal Tailings Projects: Advanced Study of Sustainable Using FIB-SEM and HR-TEM," Sustainability, MDPI, vol. 15(1), pages 1-15, December.
    • Handle: RePEc:gam:jsusta:v:15:y:2022:i:1:p:220-:d:1012653
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    References listed on IDEAS

    as
    1. Kamble, Alka D. & Mendhe, Vinod A. & Chavan, Prakash D. & Saxena, Vinod K., 2022. "Insights of mineral catalytic effects of high ash coal on carbon conversion in fluidized bed Co-gasification through FTIR, XRD, XRF and FE-SEM," Renewable Energy, Elsevier, vol. 183(C), pages 729-751.
    2. Alcindo Neckel & Diana Pinto & Bashir Adelodun & Guilherme L. Dotto, 2022. "An Analysis of Nanoparticles Derived from Coal Fly Ash Incorporated into Concrete," Sustainability, MDPI, vol. 14(7), pages 1-11, March.
    3. Nunes, Luis Eduardo & Lima, Marcus Vinicius Andrade de & Davison, Matthew & Leite, André Luis da Silva, 2021. "Switch and defer option in renewable energy projects: Evidences from Brazil," Energy, Elsevier, vol. 231(C).
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