Now showing items 1-4 of 4

    • Leaching of rare earth elements from phosphogypsum 

      Frantz Lütke, Sabrina; Silva Oliveira, Marcos Leandro; Waechter, Samuel Rodrigo; Silva Oliveira, Luis Felipe; Cadaval, Tito (Elsevier Ltd.United Kingdom, 2022)
      High amounts of phosphogypsum (PG) are generated in the production of phosphoric acid. Previous literature demonstrates that obtaining rare earth elements (REE) from PG is a promising alternative to managing this waste. ...
    • Nanometric particles of high economic value in coal fire region: Opportunities for social improvement 

      Silva Oliveira, Luis Felipe; Crissien Borrero, Tito José; Schneider, Ismael L.; Blanco, Érika P.; Sampaio, Carlos H. (Universidad de la Costa, 2020-02-10)
      Spontaneous coal combustion in the La Guajira coals was studied for the presence of carbon nanophases (e.g., carbon nanotubes), occurrence of rare earth elements (REEs) in them, and the probable mechanisms for concentration ...
    • Occurrence of carbon nanotubes and implication for the siting of elements in selected anthracites 

      Silva Oliveira, Luis Felipe; Crissien Borrero, Tito José; Sampaio, Carlos H.; Hower, James; Daifg, Shifeng (Universidad de la Costa, 2020-03-01)
      Petrographic, geochemical, and electron microbeam investigations of selected anthracites and anthracite-rank coaly shales were conducted. The Pennsylvania, Rhode Island, and KwaZu-Natal anthracites show an enrichment in ...
    • Rare earth elements study of cretaceous coals from benue trough basin, Nigeria: modes of occurrence for greater sustainability of mining 

      Akinyemi, Segun Ajayi; Nyakuma, Bemgba Bevan; Jauro, Aliyu; Olanipekun, Timileyin; Mudzielwana, Rabelani; Gitari, Wilson; Saikia, Binoy; Dotto, Guilherme Luiz; Hower, J. C; Silva, Luis F. O (Fuel, 2021-07-14)
      The rare earth elements (REE) possess a beneficial combination of chemical and physical properties, making them valuable for most advanced branches of engineering and technology. Alternative sources of REE are desirable ...