Large amount of Nickel catalysts are used by different industries resulting in the production of large amount of solid waste containing nickel which is the spent or deactivated catalysts. These catalysts contain from 14–24% nickel based on the production company and the process. Nickel electro-winning from spent catalyst leachate solutions is studied to determine the best operative conditions such as nickel concentration, temperature, current density and time to be used in case of recovery of nickel from spent reforming catalyst. Numerical correlations using regression analysis for C.E. with operating conditions of the recovery process were presented.
Electro-winning, spent catalyst, nickel catalyst
