Abstract:The experimental and kinetic studies were conducted for Fe2+ removal from zinc hydrometallurgy solution using ozone as strong oxidant and ZnO as neutralizing agent.The effects of initial Fe2+ concentration, pH value of solution, reaction temperature and ozone flow rate on efficiency and velocity of iron removal were investigated. The results show that the velocity of iron removal rises with the enhancement of pH value, temperature and ozone flow rate, but drops with increase of initial Fe2+ concentration. The commonly used pseudo first-order, pseudo second-order, Higbie and Avrami kinetic equations were adapted and compared, the kinetics results show that iron removal by ozone oxidation and precipitation follows the pseudo first-order reaction and is controlled by diffusion with apparent activation energy of 28.57 kJ/mol. The kinetic equation is r_(Fe^(2+) )=8.22[Fe^(2+) 〖]_0〗^(-0.74) [H^+ ]^(-0.51) Q_(O_3)^1.89 exp?〖(-3436/T〗).