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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

    Article

    Cow bones char as a green sorbent for fluorides removal from aqueous solutions: batch and fixed-bed studies

    Cow bone char was investigated as sorbent for the defluoridation of aqueous solutions. The cow bone char was characterized in terms of its morphology, chemical composition, and functional groups present on the...

    Elbert M. Nigri, Maria Alice. P. Cechinel… in Environmental Science and Pollution Resear… (2017)