Ozonation with ultrasonic enhancement of p-nitrophenol wastewater.
- Author:
Xian-Wen XU
1
;
Hui-Xiang SHI
;
Da-Hui WANG
Author Information
1. Department of Environmental Science and Engineering, Zhejiang University, Hangzhou 310027, China. xxw118@zju.edu.cn
- Publication Type:Journal Article
- MeSH:
Hydrogen Peroxide;
chemistry;
Nitrophenols;
chemistry;
Oxygen;
chemistry;
Ozone;
chemistry;
Solutions;
Sonication;
Waste Disposal, Fluid;
Water Pollution
- From:
Journal of Zhejiang University. Science. B
2005;6(5):319-323
- CountryChina
- Language:English
-
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 O(3) in solution because of ultrasonic dispersion.
