Large amounts of highly heavy metals contaminated wastewater effluents are produced through the metal finishing and electroplating processes. In this study, mesoporous zeolite was prepared from Egyptian bentonite by alkali-hydrothermal method.The prepared zeolite was characterized by XRD technique showing the formation of crystalline phases corresponded to the zeolite structure. The adsorption performance of zeolite toward removal of copper (Cu+2) and nickel (Ni+2) ions was studied in relation to effect of contact time, concentrations of metal ions and the dose of adsorbent. The effect of Cu+2 and Ni+2 ions in treated wastewater on the corrosion behavior of steel pipelines was demonstrated. Elovich, Pseudo-first-order and Pseudo-second order kinetic models were applied. Kinetics models revealed that the adsorption of both Cu+2 and Ni+2on zeolite was controlled by pseudo-second order kinetic and the equilibrium achieved at 90 minutes. Langmuir, Freundlich and Dubinin–Kaganer–Radushkevich isotherms were investigated and the results showed that the adsorption of both cations well-satisfied with Langmuir model. The free energy (E) was 10.66 and 8.772 kJ/mol for the adsorption of Cu+2 and Ni+2 ions, respectively, confirming that the adsorption is a physical process.The effect of Cu+2 and Ni+2 on the corrosion behavior of steel pipelines revealed that the corrosion resistance of steel for treated anduntreated water is almost the same.