This work focuses on the degradation of the hazardous azo dye Naphthol Blue Black (NBB) utilizing an innovative approach combining electro-Fenton (EF), ultra-violet (UV), and ultra-sound (US) processes while varying the operating parameters (concentration of iron and dye, pH, current intensity). Under the optimum experimental conditions, an excellent degradation efficiency of the NBB dye is achieved after 60 min, i.e., 98%, 95%, and 65% for EF, UV, and US processes, respectively. The addition of persulfate significantly improves the efficiency and accelerates the kinetics of the NBB degradation. Combining all processes assisted with persulfate achieved 99% NBB degradation within a very short contact time of 2 min and 98% reduction in COD after 55 min. The as-obtained outstanding performance associated with the synergistic effects of EF/US/UV alongside the addition of persulfate can be adopted to degrade other hazardous substances.

这项工作的重点是利用结合电芬顿 (EF)、紫外线 (UV) 和超声波 (US) 工艺的创新方法，同时改变操作参数，降解有害偶氮染料萘酚蓝黑 (NBB)。铁和染料的浓度、pH、电流强度）。在最佳实验条件下，NBB 染料在 60 分钟后达到了优异的降解效率，即 EF、UV 和 US 工艺分别为 98%、95% 和 65%。添加过硫酸盐显着提高了效率并加速了 NBB 降解的动力学。结合使用过硫酸盐辅助的所有工艺，在 2 分钟的极短接触时间内实现了 99% 的 NBB 降解和 98% 的COD降低55分钟后。所获得的与 EF/US/UV 的协同效应相关的出色性能以及过硫酸盐的添加可用于降解其他有害物质。