Abstract:

Three ways O₃/UV,O₃/TiO₂/UV,O₃/VO₂/TiO₂) have been used to degrade the sulfosalicylic acid in this experiment. The results show that the affect of O₃/VO₂/TiO₂ on the sulfosalicylic acid is the best in three advanced oxidation process. In the same experimental conditions, the results after 30 minutes show that the removal of COD in three advanced oxidation process are 47%,55%,and 70%,respectively. The results under different pH conditions show that O₃/TiO₂/UV is more sensitive to the pH of waterbody. In the presence of scavenger the results show that the order of the activity of hydroxyl radical in three advanced oxidation process is O₃/VO₂/TiO₂O₃/TiO₂/UV>O₃/UV.

Key words: ozone, photocatalysis, heterogeneous photocatalytic oxidation, sulfosalicylic acid

摘要：

实验利用O₃/UV,O₃/TiO₂/UV,O₃/VO₂/TiO₂降解了磺基水杨酸。结果表明，在这三种高级氧化技术中，O₃/VO₂/TiO₂的氧化效果最好，如在相同的条件下，30min后取样表明：三者COD的去除率分别为47％,55％和70％。在不同pH条件下研究表明：O₃/TiO₂/UV对水体pH的影响较为敏感。通过加入自由基猝灭剂研究表明：三者产生羟基自由基的活性顺序是O₃/VO₂/TiO₂O₃/TiO₂/UV>O₃/UV。

关键词: 臭氧, 光催化, 异相光催化臭氧化, 磺基水杨酸

CLC Number: 

• TU991.2