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  1. Article

    Open Access

    Nickel sulfate solution fluoride separation with hydrous zirconium oxide

    Fluoride is an impurity in nickel sulfate production, which is required for electric vehicle batteries. Hydrous zirconium oxide (HZO) was evaluated for removing fluoride from nickel sulfate solution. Maximum f...

    Elbert M. Nigri, Ummul K. Sultana, André L. A. Santos, James W. Vaughan… in Tungsten (2024)

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  2. No Access

    Chapter and Conference Paper

    Alkali Metals Removal from Radioactive Wastewater by Combined CO2 Capture and Adsorption onto Bone Char

    Radioactive wastewaters from nuclear source of electrical energy production need to be treated and disposed of properly. Sr, Ca, Mg and Ba are common elements in this effluent, which can cause incrustation in ...

    Elbert M. Nigri, André L. A. Santos, Leonardo F. Santos… in Extraction 2018 (2018)

  3. No Access

    Chapter and Conference Paper

    The Kinetic of Atmospheric Acid Leaching of Brazilian Lateritic Nickel

    Atmospheric processing of lateritic ores with low costs has been encouraged. In this work the of atmospheric of a northern-Brazilian with 1.63% Ni and large amount of fine particles (d50 ≈ 0.075 mm and 40...

    André L. A. Santos, Emily M. A. Becheleni, Rísia M. Papini… in Extraction 2018 (2018)