金属离子活化过硫酸钠降解靛蓝胭脂红的研究

以搅拌釜为反应装置，直接染料靛蓝胭脂红（IC）为目标污染物模拟染料废水，比较了Mn²⁺、Fe²⁺、Cu²⁺、Zn²⁺、Ag⁺、Mg²⁺ 6种金属离子活化过硫酸钠降解IC的效果。研究结果表明Fe²⁺对过硫酸钠的活化效果最好。通过对Fe²⁺活化过硫酸钠处理IC的条件进行优化发现，当温度为25℃、pH为7.3、IC质量浓度为200 mg/L、Na₂S₂O₈浓度为0.8 mmol/L、Fe²⁺的浓度为0.8 mmol/L时，靛蓝胭脂红的脱色率可在5 min内达到100%。

Decolorization of indigo carmine with sodium persulfate activated by metallic ions

The effect of Mn²⁺, Fe²⁺, Cu²⁺, Zn²⁺, Ag⁺, Mg²⁺ on the activation of sodium persulfate (PS) for the degradation of indigo carmine (IC) in a stirred tank reactor has been investigated. The experimental results showed that Fe²⁺ had the best activation effect on PS. The conditions of IC degradation by PS activated with Fe²⁺ were investigated and it was found that the decolorization efficiency of the simulated IC dye wastewater reached 100% in 5 min when the temperature, pH, IC concentration, PS concentration and Fe²⁺ concentration were 25℃, 7.3, 200 mg/L, 0.8 mmol/L and 0.8 mmol/L respectively.