Response surface methodology based on Box-Behnken design (BBD) was successfully applied for the optimization of the UV-LED/FeTiO₃ activated persulfate (PS) process. Disperse Blue 3 (DB3) azo dye oxidation was carried out in a quartz jacketed stirred batch reactor using 405 nm UV at 10 W/m⁻² as radiation source. The effects of temperature, catalyst concentration and persulfate dose upon the total organic carbon (TOC) removal were investigated. Optimum operating conditions were found to be: ilmenite: 320 mg/L⁻¹, PS: 1.56 g/L⁻¹ and 67°C. Under these conditions, 96% mineralization was achieved. Ecotoxicity of the final effluent was evaluated using Aliivibrio fischeri bacteria, finding a negligible toxicity.

基于Box-Behnken设计（BBD）的响应面方法已成功应用于UV-LED / FeTiO ₃活化过硫酸盐（PS）工艺的优化。在石英夹套搅拌的分批反应器中，使用405 nm UV以10 W / m ^-2作为辐射源，进行分散蓝3（DB3）偶氮染料的氧化。研究了温度，催化剂浓度和过硫酸盐剂量对去除总有机碳（TOC）的影响。发现最佳操作条件为：钛铁矿：320 mg / L ^-1，PS：1.56 g / L ^-1和67℃。在这些条件下，实现了96％的矿化。使用Aliivibrio fischeri细菌对最终废水的生态毒性进行了评估，发现毒性可以忽略不计。