Rapid degradation of new disinfection by-products in drinking water by UV irradiation: N-Nitrosopyrrolidine and N-nitrosopiperidine

被引：24

作者：

Xu, Bingbing ^{[1
,2
]}

Chen, Zhonglin ^{[2
]}

Qi, Fei ^{[3
]}

Ma, Jun ^{[2
]}

Wu, Fengchang ^{[1
]}

机构：

[1] Chinese Res Inst Environm Sci, State Environm Protect Key Lab Lake Pollut Contro, Beijing 100021, Peoples R China

[2] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

[3] Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2009年 / 69卷 / 01期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

UV irradiation; N-Nitrosopyrrolidine; N-Nitrosopiperidine; Disinfection by-product; NITROSODIMETHYLAMINE NDMA FORMATION; LIQUID-CHROMATOGRAPHY; PHOTOLYTIC MECHANISM; WASTE-WATER; NITROSAMINES; MUTAGENICITY; DNA; CARCINOGENICITY; DERIVATIZATION; DIMETHYLAMINE;

D O I：

10.1016/j.seppur.2009.07.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Disinfection by-products (DBPs) have caused a great threat to drinking water security Nitrosoamines that are potent carcinogenic, mutagenic, and teratogenic have been discovered in disinfection process as a new kind of DBPs. Accordingly, nitrosoamines elimination from water should be of particular concern. In this paper, UV irradiation was used to degrade the model DBPs: N-nitrosopyrrolidine (NPyr) and N-nitrosopiperidine (NPip). The results showed that UV irradiation was an effective method for the removal of both NPyr and NPip from water. NPip was easier to be degraded compared with NPyr. Water pH had little effect on NPyr photodegradation, but had great influence on NPip photodegradation. The characteristic of the natural water influenced the removal efficiency of NPyr and NPip slightly, suggesting that UV irradiation was effectual to eliminate NPyr and NPip in practice. Due to N-N bond fission, pyrrolidine and piperidine were generated as the primary products of NPyr and NPip photodegradation, respectively. Then aliphatic amines with low molecular weight were formed as further degradation products of NPyr, including methylamine, dimethylamine, ethylamine, diethylamine, n-propylamine and n-methylethylamine. Methylamine, dimethylamine, n-propylamine, n-methylethylamine, diethylamine, n-butylamine and n-amylamine were formed as the further degradation products of NPip. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：126 / 133

页数：8

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