Influence of ozonation conditions on aldehyde and carboxylic acid formation.

被引：73

作者：

Nawrocki, J ^{[1
]}

Swietlik, J ^{[1
]}

Raczyk-Stanislawiak, U ^{[1
]}

Dabrowska, A ^{[1
]}

Bilozor, S ^{[1
]}

Ilecki, W ^{[1
]}

机构：

[1] Adam Mickiewicz Univ, Fac Chem, Dept Water Treatment Technol, PL-60613 Poznan, Poland

来源：

OZONE-SCIENCE & ENGINEERING | 2003年 / 25卷 / 01期

关键词：

ozone; carboxylic acids; aldehydes; ketones; residual ozone; natural organic matter; size exclusion; chromatography;

D O I：

10.1080/713610650

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The influence of ozonation conditions (i.e. ozone dose and contact time) on the aldehyde and carboxylic acids formation was studied on a pilot scale. The data derived from changes in the molecular weight distribution of natural organic matter (NOM) and the concentration of residual ozone can be applied to a selection of the optimum ozonation conditions. The results confirm the relative ease with which ozone reacts with the organic matter. The short contact time (4-6 min) appeared to be sufficient for the reaction. The higher molecular weight (1600 D) fraction of NOM seems to be slightly more reactive to ozone than the lower molecular weight fraction (500 D). It was also observed that carboxylic acids had been formed at much higher quantities than aldehydes. Two differently acting groups of aldehydes were identified. The concentration of the first one (i.e. formaldehyde, acetaldehyde) strongly depends on ozone dose, while the concentration of the second group of aldehydes (i.e. glyoxal, methylglyoxal) seems to be relatively independent of the ozone dose.

引用

页码：53 / 62

页数：10

共 21 条

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[2]

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