Sonodegradation of halomethane mixtures in chlorinated drinking water

被引：34
作者：
Guo, Zhaobing [1 ]
Gu, Chunhui
Zheng, Zheng
Feng, Ruo
Jiang, Fang
Gao, Guizhi
Zheng, Youfei
机构：
[1] Nanjing Univ Informat Sci & Technol, Dept Environm Sci & Engn, Nanjing 210044, Peoples R China
[2] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Peoples R China
[3] Nanjing Univ, Inst Acoust, State Key Lab Modern Acoust, Nanjing 210093, Peoples R China
来源：
ULTRASONICS SONOCHEMISTRY | 2006年 / 13卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ultrasonic irradiation; halomethane mixtures; chlorinated drinking water;
D O I：
10.1016/j.ultsonch.2006.05.005
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Ultrasonic degradation of halomethane mixtures, with very low initial concentration in chlorinated drinking water was investigated. It was observed that the removal efficiencies of four halomethanes after 1 h ultrasonic irradiation followed the increasing order: CHCl3 < CHBr2CI < CHBrCl2 < CCl4 and the degradation reactions of the halomethanes were well described by the pseudo-first-order kinetics model. Molecular polarity was found to be an important factor controlling the sonodegradation of halomethane mixtures. Increasing acoustic intensity enhanced the removal of halomethanes in chlorinated drinking water. In addition, ultrasonic irradiation led to a slightly decrease of pH and TOC of chlorinated drinking water. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：487 / 492
页数：6
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