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.
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页码：1948 / 1952
页数：5
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