Kinetics of photocatalytic oxidation of trace organic compounds over titanium dioxide

被引：25

作者：

Chen, PH ^{[1
]}

Jenq, CH ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Soil & Water Conservat, Taichung 40227, Taiwan

来源：

ENVIRONMENT INTERNATIONAL | 1998年 / 24卷 / 08期

关键词：

D O I：

10.1016/S0160-4120(98)00077-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The 350 nm UV-illuminated slurries of titanium dioxide were used to study the photocatalyzed degradation kinetics of dissolved organic carbon (DOC) as water contaminants. The initial rate data were well described by the Langmuir-Hinshelwood rate equation and the simplified Langmuir-Hinshelwood rate equation (i.e., In(C-0/C)=K't). The latter will be more easily used for predicting the degradation of DOC concentration at various elapsed times. In different DOC initial concentrations the apparent first-order rate constant (K') decreased and half-life increased when the initial DOC concentration decreased. The Langmuir-Hinshelwood rate form will be the most convenient to describe the oxidation rate of DOC in the drinking water resources, if it is as brief as v = kKC. (C)1998 Elsevier Science Ltd.

引用

页码：871 / 879

页数：9

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