Ozonation with ultrasonic enhancement of p-nitrophenol wastewater  

作　　者：徐献文 史惠祥 汪大翚 

机构地区：[1]Department of Environmental Science and Engineering, Zhejiang University, Hangzhou 310027, China

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2005年第5期319-323,共5页浙江大学学报（英文版）B辑（生物医学与生物技术）

摘　　要：Synergetic effects for p-nitrophenol degradation were observed in the ozonation with ultrasonic enhancement. The enhancements of removal rate for p-nitrophenol and TOC were around 116% and 294% respectively in comparison with the individual ultrasound and ozonation systems. The synergetic phenomenon is attributed to two physicochemical mechanisms: (1) Ultrasound decomposes ozone causing augmentation of the activity of free radicals; (2) Ultrasonic wave increased the concen- tration of O3 in solution because of ultrasonic dispersion.Synergetic effects for p-nitrophenol degradation were observed in the ozonation with ultrasonic enhancement. The enhancements of removal rate for p-nitrophenol and TOC were around 116% and 294% respectively in comparison with the individual ultrasound and ozonation systems. The synergetic phenomenon is attributed to two physicochemical mechanisms: (1) Ultrasound decomposes ozone causing augmentation of the activity of free radicals; (2) Ultrasonic wave increased the concen- tration of O3 in solution because of ultrasonic dispersion.

关 键 词：OZONOLYSIS SONOLYSIS Synergetic effect p-nitrophenol degradation 

分 类 号：X703.1[环境科学与工程—环境工程]