摘要：

研究了UV/K₂S₂O₈体系对水中四环素的降解效果。首先对比了该反应体系与UV氧化、单独K₂S₂O₈氧化对四环素的处理效果，结果表明UV能有效活化分解K₂S₂O₈，能有效去除水中的四环素。同时探讨了四环素初始浓度、K₂S₂O₈投量、反应时间、溶液初始pH对降解效果的影响，结果表明，在最佳条件下四环素的降解率达100%。同时实验结果表明，UV/K₂S₂O₈体系对四环素的降解过程符合一级动力学规律。最后探讨了UV/K₂S₂O₈技术降解四环素的机理。

关键词: UV/K₂S₂O₈, 四环素, 降解

Abstract:

The degradation effect of UV/K₂S₂O₈ system on tetracycline in water has been researched. Firstly,thetreatment effect of this reaction system on tetracycline is compared with that of UV oxidation and single K₂S₂O₈ oxidation on tetracycline. The results show that UV can activate and decompose K₂S₂O₈ in water and remove tetracycline from water effectively. Meanwhile,the influences of the initial concentration of tetracycline,K₂S₂O₈ dosage,reaction time,and the initial pH of the solution on the degradation effect are discussed. The results show that under the optimal conditions,the degradation rate of tetracycline reaches 100%. In addition,the experimental results also show that the UV/K₂S₂O₈ system used for the degradation process of tetracycline complies with the first-order kinetic rule. At the end,the mechanisms of UV/K₂S₂O₈ process for the degradation of tetracycline is investigated.

Key words: UV/K₂S₂O₈, tetracycline, degradation

中图分类号: 

• X703