Hydrogen peroxide photolysis, Fenton reagent and photo-Fenton for the degradation of nitrophenols: a comparative study

被引：166

作者：

Goi, A ^{[1
]}

Trapido, M ^{[1
]}

机构：

[1] Tallinn Univ Technol, Inst Chem, Dept Environm & Toxicol Chem, EE-12618 Tallinn, Estonia

来源：

CHEMOSPHERE | 2002年 / 46卷 / 06期

关键词：

nitrophenols; treatment; efficiency; toxicity; nitrogen mineralisation;

D O I：

10.1016/S0045-6535(01)00203-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The kinetics of the degradation of seven nitrophenols (2-nitrophenol, 4-nitrophenol, 2,5-dinitrophenol, 2,6-dinitrophenol, 2,4-dinitrophenol, 2-methyl-4,6-dinitrophenol, 4-methyl-2,6-dinitrophenol) with the Fenton reagent, photo-Fenton, and hydrogen peroxide photolysis was investigated. The efficiency and operating costs for the studied treatments were evaluated and compared. The Fenton reagent was found to be the most efficient and the cheapest way for the nitrophenols (NPs) degradation. The formation of nitrate as a result of mineralisation of organically bounded nitrogen was observed during the treatment of NPs with studied treatment processes. The degrees of organically bounded nitrogen conversion to nitrate after 90% degradation of NPs with the Fenton, photo-Fenton and hydrogen peroxide photolysis were 51-67%, 85-90%, and 50-60%, respectively. According to Daphnia magna acute toxicity test, the Fenton treatment led to complete detoxification of NPs. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：913 / 922

页数：10

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