Recovery of Nickel from Recycled NiO by Acid Leaching

Author(s)	Arnav Gupta, Ajay Ghalwadkar
Country	India
Abstract	The work done here deals with the extraction of Nickel from the recycled NiO material. The as such material characterized by ICP showed Nickel content of 75.14% along with other major metals such as Ca, Mg, Al, Co, and Fe. Different factors were studied affecting the efficiency of the Nickel extraction such as type of acid, organic (Citric acid) and inorganic (H2SO4), concentration of acid, temperature, stirring rate and solid liquid ratio using 2-level 1/4th factorial experimental design. The results showed that between two types of acids, Nickel leaching is higher in Inorganic acid system (H2SO4). Furthermore, for H2SO4 acid system S/L ratio is the most effective parameter for Ni extraction. Whereas acid concentration affects more for Fe/Ni selectivity. The importance of this study is in the Li-ion battery sector where Nickel is the vital element used in the cathode material synthesis.
Keywords	Recycled NiO, Nickel extraction, leaching
Field	Chemistry
Published In	Volume 5, Issue 5, September-October 2023
Published On	2023-10-08
DOI	https://doi.org/10.36948/ijfmr.2023.v05i05.7221
Short DOI	https://doi.org/gst3sm

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