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A rotating zinc disc was used to study the cementation of nickel from an industrial acidic solution of zinc sulfate. The reduction of nickel was evaluated for a wide concentration range of initial nickel concentration, electrode rotation speed and temperature. The rate of cementation giving the product ka e of the local mass transfer coefficient k and the effective surface area a e ...
This work is devoted to a kinetic and mass transfer study of simultaneous cementation of nickel and cobalt on zinc powder through stirred tank reactor. The influence of different parameters (stirring rate, temperature, zinc dust quantity, concentration of zinc and copper) on the process of cementation of cobalt and nickel in similar conditions to those of industrial zinc sulphate solution was experimentally...
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