Department of Interdisciplinary Programs in Environmental Science, Graduate School, Chulalongkorn University, Bangkok, Thailand.
Environ Sci Technol. 2009 Nov 15;43(22):8629-34. doi: 10.1021/es802274h.
2,6-Dimethylaniline degradation by Fenton process has been studied in depth for the purpose of learning more about the reactions involved in the oxidation of 2,6-dimethylaniline under various reaction conditions. The effect of reaction conditions including the initial pH value, and the dosages of ferrous ions and hydrogen peroxide on 2,6-dimethylaniline and COD removal were investigated. 2,6-Dimethylaniline removal efficiency of 70% was achieved under optimal reaction conditions of pH value of 2, dosage of 2 mM of ferrous ion, and 20 mM of hydrogen peroxide after 3 h. A series of intermediates were identified, corresponding to ring compounds and short-chain organic acids. The intermediates were 2,6-dimethylphenol, 2,6-dimethylnitrobenzene, 2,6-dimethylbenzoquinone, 3-hexanone, maleic acid, acetic acid, formic acid, and oxalic acid. An oxidation pathway of the target organic was also proposed in this study.
采用 Fenton 法深度降解 2,6-二甲基苯胺，以了解在不同反应条件下氧化 2,6-二甲基苯胺的反应过程。考察了初始 pH 值、亚铁离子和过氧化氢用量等反应条件对 2,6-二甲基苯胺和 COD 去除率的影响。在最佳反应条件下（pH 值为 2、亚铁离子用量为 2 mM、过氧化氢用量为 20 mM），3 h 后 2,6-二甲基苯胺的去除率达到 70%。鉴定出一系列中间产物，分别对应于环状化合物和短链有机酸。中间产物包括 2,6-二甲基苯酚、2,6-二硝基苯、2,6-二甲基苯醌、3-己酮、马来酸、乙酸、甲酸和草酸。本研究还提出了目标有机物的氧化途径。
