Catalytic degradation of CH2O andC6H5CH2OH in wastewaters

被引：23

作者：

Christoskova, ST ^{[1
]}

Stoyanova, M ^{[1
]}

机构：

[1] Paisij Hilendarski Univ Plovdiv, Dept Phys Chem, Plovdiv 40000, Bulgaria

来源：

WATER RESEARCH | 2002年 / 36卷 / 09期

关键词：

catalytic oxidation; Ni-oxide system; detoxification of organic substances; benzyl alcohol; benzoic acid; formaldehyde;

D O I：

10.1016/S0043-1354(01)00458-4

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The heterogeneous oxidation of benzyl alcohol and formaldehyde in aqueous medium has been investigated. The catalytic oxidation of these compounds is carried out in the presence of Ni-oxide system at ambient temperature. The results show that under studied conditions, a 90% conversion of CH2O to CO2 and a complete oxidation of C6H5CH2OH to C6H5COOH is achieved. Addition of H2SO4 to adjust pH to 2 further precipitates benzoic acid. The precipitate is filtered and the resulting filtrate is free of organic substances (COD is below 10 mg O-2 dm(-3)). Based on the results obtained, a technology for purification of wastewaters containing benzyl alcohol as well as a catalytic method for degradation of CH2O in aqueous solutions have been developed. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2297 / 2303

页数：7

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