紫外光/过氧化氢体系中4-硝基苯酚（4-NP）的光氧化降解：操作参数的影响及反应机理
Photooxidative degradation of 4-nitrophenol (4-NP) in UV/H2O2 process: influence of operational parameters and reaction mechanism.
作者信息
Daneshvar N, Behnajady M A, Zorriyeh Asghar Y
机构信息
Water and Wastewater Treatment Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, CP 51664, Tabriz, Islamic Republic of Iran.
出版信息
J Hazard Mater. 2007 Jan 10;139(2):275-9. doi: 10.1016/j.jhazmat.2006.06.045. Epub 2006 Jun 18.
The photooxidative degradation of 4-nitrophenol (4-NP) was studied in the UV/H2O2 process. The effects of applied H2O2 dose, initial 4-NP concentration and UV light intensity have been studied. Degradation was complete in 13 min and follows apparent first-order kinetics. The removal efficiency of 4-NP depends on the operational parameters and increases as the initial concentration of H2O2 and light intensity are increased but it decreases when the initial concentration of 4-NP is increased. From HPLC analysis, major intermediate products were hydroxyl derivatives of 4-NP as a result of photooxidative hydroxylation.
在紫外光/过氧化氢工艺中研究了4-硝基苯酚（4-NP）的光氧化降解。研究了过氧化氢投加量、4-NP初始浓度和紫外光强度的影响。降解在13分钟内完成，遵循表观一级动力学。4-NP的去除效率取决于操作参数，随着过氧化氢初始浓度和光强度的增加而提高，但随着4-NP初始浓度的增加而降低。通过高效液相色谱分析，主要中间产物是4-NP的羟基衍生物，这是光氧化羟基化的结果。
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