Factors influencing the photodegradation of N-nitrosodimethylamine in drinking water
作者： Bingbing Xu , Zhonglin Chen , Fei Qi , Jimin Shen , Fengchang Wu
DOI: 10.1007/S11783-009-0013-8
关键词:
摘要: In order to provide basic data for practical application, photodegradation experiment of N-nitrosodimethylamine (NDMA) in aqueous solution was carried out with a low-pressure Hg lamp. Effects the initial concentration NDMA, pH, dissolved oxygen, and presence humic acid on NDMA were investigated. at various concentrations selected this study almost completely photodegraded by UV irradiation within 20 min, except that 1.07 mmol/L, could be acidic neutral solutions, while removal efficiency decreased remarkably alkaline solution. Dissolved oxygen enhanced photodegradation, inhibited degradation NDMA. Depending obeyed pseudo-first-order kinetics. Dimethylamine, nitrite, nitrate detected as products 1O2 found reactive species present process UV, based inhibiting experiments using tert-butanol sodium azide.
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