An investigation of the process of ozone combined with ultraviolet radiation has been carried out in order to establish the kinetics for photochemical oxidation of copper (Cu) from electroplating wastewater. The effects of operating parameters, including initial Cu concentration, ozone dosage, UV irradiation intensity, and pH value on the photochemical oxidation of Cu have been studied comprehensively. The Cu concentration during the reaction was identified using atomic absorption spectroscopy (AAS) method. The solid product was analyzed using X-ray diffraction (XRD) and scanning electron microscope–energy-dispersive X-ray (SEM–EDX) methods. It was found that the UV-Ozone process has high performance on Cu removal compared to UV and Ozone processes due to the high production rate of HO• radicals. It was also found that the solid product from the UV-Ozone process was CuO monoclinic crystal phase. The initial Cu concentration, ozone dosage, and pH value were significantly affected the Cu removal efficiency. On the other hand, the UV irradiation intensity was not significant; however, it has responsibility in promoting the ozone photolysis. The kinetics model for the photochemical oxidation of Cu was established following the first-order kinetic model. Furthermore, the reaction mechanism was also developed.

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电镀废水中铜的光化学氧化工艺：工艺性能和动力学研究

为了建立电镀废水中铜（Cu）的光化学氧化动力学，已经进行了臭氧与紫外线辐射结合的过程的研究。全面研究了初始铜浓度，臭氧剂量，紫外线照射强度和pH值等操作参数对铜光化学氧化的影响。反应期间的铜浓度使用原子吸收光谱法（AAS）进行鉴定。使用X射线衍射（XRD）和扫描电子显微镜–能量色散X射线（SEM–EDX）方法分析了固体产物。已经发现，由于HO·自由基的高生产率，与UV和臭氧工艺相比，UV-臭氧工艺在Cu去除方面具有高性能。还发现，来自UV-臭氧工艺的固体产物是CuO单斜晶相。初始铜浓度，臭氧剂量和pH值均显着影响除铜效率。另一方面，紫外线照射强度不显着。但是，它有责任促进臭氧的光解。按照一阶动力学模型建立了光化学氧化铜的动力学模型。此外，还开发了反应机理。按照一级动力学模型建立了铜的光化学氧化动力学模型。此外，还开发了反应机理。按照一阶动力学模型建立了光化学氧化铜的动力学模型。此外，还开发了反应机理。