In pursuing sustainable environmental solutions, the concept of 'waste to treasure' has emerged as a promising approach. In this study, a new process is proposed to combine solid copper slag with hydrogen peroxide (H2O2) to remove nitrogen oxides (NOx) from acidic exhaust gases, thus effectively utilizing waste materials. Firstly, different smelting slags were screened to determine the catalytic potential of copper slag for hydrogen peroxide. Subsequently, the catalytic activity of the copper slags at various stages of the copper smelting process was thoroughly evaluated and optimized. In addi...
