Kinetic Study of Copper Deposition on Zinc by Cementation Reaction and Effects of Some Amino Acids

Abstract

The results of the rate of cementation of Cu²⁺ in CuSO₄ solution and in presence of different concentration of amino acids at different ppm of Cu²⁺, different temperatures and different rpm are given. The energy of activation as well as thermodynamic parameters DH^*, DG^* and DS^* are discussed. It is found that the cementation reaction is first orders and rate controlling step is found to be diffusion of copper ions to zinc cylinder. It is found that the rate of cementation increases in presence of amino acids.