焦磷酸钠络合Fe²⁺活化过硫酸盐降解四环素的效应研究

Effect Analysis of Sodium Pyrophosphate Complex Fe²⁺ on the Degradation of Tetracycline by Persulfate

以成本较低的Fe2+为催化剂,利用加焦磷酸钠络合Fe2+活化过硫酸盐体系中所产生的SO4∙−为氧化剂,达到降解四环素的目的。考察了不同初始浓度焦磷酸钠、过硫酸钾、Fe2+和不同pH值对四环素氧化降解的影响,结果表明,焦磷酸钠:Fe2+:过硫酸钾:四环素摩尔比10:20:40:1,pH为10时最佳,降解效率可达到98.78%。

The low-cost Fe2+ is used as a catalyst, and the SO4∙− generated in the complex Fe2+ activated persulfate system by adding sodium phosphate is used as an oxidant to achieve the purpose of degrading tetracycline. The effects of different initial concentrations of sodium pyrophosphate, potassium persulfate, Fe2+ and different pH values on the oxidative degradation of tetracycline were investigated. The results showed that when the molar ratio of sodium pyrophosphate: Fe2+: potassium persulfate: tetracycline was 10:20:40:1 and pH was 10, the degradation efficiency could reach 98.78%.