Abstract:

Tetracycline is a widely used antibiotic, and its wastewater disposal has also attracted much attention. And under the trend that the use of renewable energy is increasingly being promoted, the photocatalytic technology that relies on solar energy has become one of the most studied pollutant treatment methods because of its eco-friendly and the ability to completely decompose a variety of organic compounds. Bismuth tungstate material stands out from many photocatalysts due to its narrow band gap and visible light response. This article introduced the bismuth tungstate photocatalyst, and also summarized various factors that could affect the final result in the process of bismuth tungstate degradation of tetracycline, including roasting operation, light intensity, initial concentration of tetracycline, solution pH, catalyst dosage and the property of bismuth tungstate. In addition, the article also summarized the active species that played an important role in the process, which could be found by adding different inhibitors when bismuth tungstate degraded tetracycline. Given that the understanding of the whole degradation process was helpful to evaluate the possible secondary pollution problems caused by treatment of tetracycline waste water.

Key words: tetracycline wastewater, bismuth tungstate, photocatalyst

摘要：

四环素作为被广泛使用的抗生素，其废水处置问题也备受关注。并且在可再生能源的利用日益被提倡的趋势下，依靠太阳能的光催化技术因其绿色环保、能彻底分解多种有机物的特点成为被研究较多的污染物处理方法之一，而钨酸铋材料因其窄禁带、具有可见光响应能力等优势从众多光催化剂中脱颖而出。简介了钨酸铋光催化剂，同时综述了在钨酸铋降解四环素的过程中能影响其最终效果的各种因素，包括焙烧操作、光照强度、四环素初始浓度、溶液pH、催化剂投加量及钨酸铋性质等，除此之外，还综述了当钨酸铋降解四环素时，通过添加不同抑制剂发现的在该过程中发挥重要作用的活性物种，并且考虑到对于降解过程的了解有助于评估治理四环素废水时可能产生的二次污染问题。

关键词: 四环素废水, 钨酸铋, 光催化剂

CLC Number: 

• X703