Recovery of Ni from a large excess of Al generated from spent hydrodesulfurization catalyst using picolylamine type chelating resin and complexane types of chemically modified chitosan

The total sulfuric acid leaching of hydrodesulfurization (HDS) catalyst yields an acidic solution rich in rare metals such as Mo, V, Co and Ni in addition to a large excess of Al. In previous work, for the purpose of separation and recovery of the rare metals from this solution, Mo and V were separa...

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