Factors influencing the photodegradation of Nnitrosodimethylamine in drinking water

作     者：Bingbing XU Zhonglin CHEN Fei QI Jimin SHEN Fengchang WU 

作者机构：State Key Laboratory of Urban Water Resource and EnvironmentHarbin Institute of TechnologyHarbin 150090China State Environmental Protection Key Laboratory for Lake Pollution ControlChinese Research Academy of Environmental SciencesBeijing 100012China College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2009年第3卷第1期

页      面：91-97页

核心收录：

学科分类：0832[工学-食品科学与工程（可授工学、农学学位）] 08[工学] 

基　　金：This work was supported the National High Technology Research and Development Program of China(Grant No.2007AA06Z339) the National Natural Science Foundation of China(Grant No.50578052) the National Basic Research Program of China(2008CB418200) 

主　　题：N-nitrosodimethylamine(NDMA) ultraviolet irradiation degradation kinetic dimethylamine photodegradation product 

摘      要：In order to provide basic data for practical application,photodegradation experiment of Nnitrosodimethylamine(NDMA)in aqueous solution was carried out with a low-pressure Hg *** of the initial concentration of NDMA,solution pH,dissolved oxygen,and the presence of humic acid on NDMA photodegradation were *** at various initial concentrations selected in this study was almost completely photodegraded by UV irradiation within 20 min,except that at 1.07 mmol/L,NDMA could be photodegraded almost completely in the acidic and neutral solutions,while the removal efficiency decreased remarkably in the alkaline *** oxygen enhanced the NDMA photodegradation,and the presence of humic acid inhibited the degradation of *** on the initial concentration of NDMA,NDMA photodegradation by UV obeyed the pseudo-first-order ***,nitrite,and nitrate were detected as the photodegradation products of NDMA.^(1)O_(2) was found to be the reactive oxygen species present in the NDMA photodegradation process by UV,based on the inhibiting experiments using tert-butanol and sodium azide.