Ozonation with ultrasonic enhancement of p-nitrophenol wastewater
- Author:
Xian-Wen XU
1
;
Hui-Xiang SHI
;
Da-Hui WANG
Author Information
1. 浙江大学
- Keywords:
Ozonolysis;
Sonolysis;
Synergetic effect;
p-nitrophenol degradation
- From:
Journal of Zhejiang University. Science. B
2005;6B(5):319-323
- CountryChina
- Language:Chinese
-
Abstract:
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 concentration of O3 in solution because of ultrasonic dispersion.
