文献类型：期刊文献

英文题名：NaNO2/FeCl3 dioxygen recyclable activator: An efficient approach to active oxygen species for degradation of a broad range of organic dye pollutants in water

作者：Peng, Yanrong[1]; Fu, Dongmei[1]; Liu, Renhua[2]; Zhang, Feifang[1]; Xue, Xingya[1]; Xu, Qing[1]; Liang, Xinmiao[1,2]

机构：[1] Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; [2] School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China

年份：2008

卷号：79

期号：2

起止页码：163

外文期刊名：Applied Catalysis B: Environmental

收录：EI(收录号：20080411053457)

语种：英文

外文关键词：Catalytic oxidation - Degradation - Dyes - Iron compounds - Organic pollutants - Sodium compounds

摘要：A combination of ferric chloride and sodium nitrite is a competent catalyst for catalytic bleaching of a broad range of dye pollutants under moderate condition (T = 150 °C; oxygen pressure = 0.5 MPa; pH 2.5). To evaluate the catalytic degradation system, we implemented wet oxidation of Acid Blue 129 (AB129) at the temperatures between 110 and 150 °C using FeCl3/NaNO2 as the catalyst. The degradation process was monitored by UV-vis spectroscopy, HPLC, IC, GC-MS and TOC analysis. At 150 °C and 0.5 MPa oxygen, 50.9% TOC and 100% color were removed after 2 h treatment, while no obvious TOC and only 20.4% color removal were achieved without the catalyst at the same experimental conditions. The main degradation products detected were CO2 and some small organic acids. The reaction kinetics of the process was also studied in the temperature range of 120-150 °C. AB129 degradation can be described by pseudo-first-order kinetics over the temperature range. Furthermore, this catalytic system is also highly efficient for tackling a variety of substrates including azo and anthraquinone dye pollutants. ? 2007 Elsevier B.V. All rights reserved.