Studies on the Inhibition of Bromate Formation upon Catalytic Ozonation in the Presence of Nano-mental Oxides
Simulation studies in pure water were conducted to investigate the effect of nano-mental oxides (nanoSnO2 and nano-TiO2) on bromate (BrO3‐) formation as catalysts and the catalytic mechanism. Different parameters, such as light condition, nano-TiO2 dosage, initial bromide (Br‐) concentration, reaction temperature, and pH value were also performed during nano-Ti02 catalytic ozonation. Results showed that both nano-SnO2 and nano-TiO2 could inhibit the formation of bromate during ozonation process. Compared to ozone alone, BrO3~ concentration decreased 45.81 ％ and 74.10 ％ respectively. Light condition had no measurable influence on the inhibition of nano-Ti()2. Increase of nano-TiO2 dosage from 0 to 100 mg·L-1 will enhance the inhibition. But when nano-TiO2 dosage surpass 100 mg-L-1, it has no obvious affect on the inhibition. Increase of reaction temperature could augment the inhibition as well, while the rise of pH and initial Br concentration could impair the inhibition.
ozonation bromate influential factors nano-TiO2
Chunde Wu Caixia Hu Shangguo Li
School of Environmental Science and Engineering, South China University of Technology, Guangzhou5100 School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510
国际会议
三峡
英文
369-372
2012-05-18（万方平台首次上网日期，不代表论文的发表时间）