Author(s): Basel Ibrahim
Article publication date: 2008-09-01
Vol. 26 No. 3 (yearly), pp. 163-167.
164
Keywords
Nickel, Spent, Catalyst Recovery
Abstract
This research studies the possibility of recovering nickel from spent catalyst in the form
of an oxide. Several acids were used and found that nitric acid is more efficient with lower cost
than others. The digestion process of the spent catalyst was studied using different concentrations
of nitric acid, the effect of temperature, stirring time, and catalyst to acid ratio. Nickel was
precipitated by adjusting the acidity at pH > 8.0 using 1.0 mol of sodium carbonate solution. This
process gave highest recovery.