Now showing items 1-6 of 6

  • Adsorption and recovery of phosphate from aqueous solution by the construction and demolition wastes sludge and its potential use as phosphate-based fertiliser 

    Simoes dos Reis, Glaydson; Grigore Cazacliu, Bogdan; Rodríguez Correa, Catalina; Ovsyannikova, Ekaterina; Kruse, Andrea; Hoffmann Sampaio, Carlos; Lima, Eder Claudio; Dotto, Guillherme Luiz (Elsevier, 2020-02-01)
    Article
    Open Access
    This study aimed to investigate phosphate removal from aqueous effluents by an inorganic sludge from the inert part of construction and demolition wastes (CSW) as adsorbent. It is also discussed the application of the ...
  • Affinity of dual energy X-ray transmission sensors on minerals bearing heavy rare earth elements 

    Veras, Moacir Medeiros; Young, Aaron Samuel; Born, Cristiano Rocha; Szewczuk, Artur; Bastos Neto, Artur Cezar; Petter, Carlos Otávio; Hoffmann Sampaio, Carlos (2020-03-01)
    Article
    Restricted access - publisher's policy
    This work demonstrates the effective use of automatic sensor-based sorting technology as a viable separation method for rare earth element (REE) rich ores composed primarily of xenotime minerals with gagarinite-(Y) and ...
  • Fire resistance performance of concrete-PVC panels with polyvinyl chloride (PVC) stay in place (SIP) formwork 

    Murillo, Michel A.; Tutikian, Bernardo F.; Ortolan, Vinícius De Kayser; Hoffmann Sampaio, Carlos (Elsevier, 2019-09-01)
    Article
    Open Access
    Stay-in-place (SIP) formwork is a more-practical alternative to traditional steel or wood formworks due to its improved constructability and durability. The aim of this paper was to study the fire resistance performances ...
  • Modeling the liberation of comminuted scheelite using mineralogical properties 

    Hamid, Sarbast; Alfonso Abella, María Pura; Oliva Moncunill, Josep; Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hoffmann Sampaio, Carlos; García-Vallès, Maite; Escobet Canal, Teresa (2019-09-03)
    Article
    Open Access
    In this paper, the modeling of the liberation of scheelite is presented. A pattern of concentration experiments was performed to investigate the scheelite liberation and distribution density calculation procedure. In this ...
  • Occurrence of carbon nanotubes and implication for the siting of elements in selected anthracites 

    Silva, Luis F. O.; Crissien, Tito J.; Hoffmann Sampaio, Carlos; Howe, James C.; Dai, Shifeng (2020-03-01)
    Article
    Restricted access - publisher's policy
    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 ...
  • Optimizing the selective precipitation of iron to produce yellow pigment from acid mine drainage 

    de Almeida Silva, Rodrigo; Secco, Marina Paula; Lermen, Richard Thomas; Homrich Schneider, Ivo André; Navarro Hidalgo, Gelsa Edith; Hoffmann Sampaio, Carlos (2019-05-01)
    Article
    Restricted access - publisher's policy
    Acid mine drainage (AMD) in the coal mining industry is recognized as one of the major sources of environmental damage. The active treatment of AMD involves adding alkaline reagents to wastewater so as to raise pH and to ...