Reduction of chloroform formation potential of humic acid by sonolysis and ultraviolet irradiation

被引：27

作者：

Naffrechoux, E ^{[1
]}

Combet, E ^{[1
]}

Fanget, B ^{[1
]}

Petrier, C ^{[1
]}

机构：

[1] Univ Savoie, Ecole Super Ingenieurs Chambery, Lab Chim Mol & Environm, F-73376 Le Bourget Du Lac, France

来源：

WATER RESEARCH | 2003年 / 37卷 / 08期

关键词：

humic acid; chloroform formation potential; ultrasound; ultraviolet; advanced oxidation process;

D O I：

10.1016/S0043-1354(02)00572-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study is concerned with the changes of chloroform formation potential during the reaction of humic acid (HA) and sodium hypochlorite caused by different oxidative pretreatments: ultraviolet (UV) irradiation, ultrasonic (US) irradiation or combined UV-US irradiations. The UV and US decomposition of a reagent HA in water was investigated. The characterization of the oxidized HA sample by UV absorptiometry, synchronous fluorescence spectroscopy and size exclusion chromatography points a synergetic effect of the combined process. The values of the chlorine demand and chloroform formation potential were conventionally determined after a 96 h reaction at neutral pH. It was found that all applied processes decreased the concentration of chloroform but the highest decrease was observed for the UV-US treatment. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1948 / 1952

页数：5