文献类型：期刊文献

英文题名：Dioxygen in combination with hydrazine: A practical system for degradation of a broad spectrum of toxic organics in water

作者：Lu, Qiongqiong[1];Liao, Nengcheng[2];Chu, Changhu[1];Shen, Jiaxuan[1];Liu, Yuxiao[1];Tao, Jianwei[1];Liang, Xinmiao[1];Liu, Renhua[1]

机构：[1]E China Univ Sci & Technol, Sch Pharm, Shanghai 200237, Peoples R China;[2]Liuzhou Chem Ind Co Ltd, Liuzhou 545002, Guangxi, Peoples R China

年份：2011

卷号：192

期号：3

起止页码：1186

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20113514272564);WOS:【SCI-EXPANDED(收录号:WOS:000295236800034)】；

基金：We thank the financial support from National High Technology Research and Development Program of China (863 Program) (No. 2008AA06Z306) and the National Natural Science Foundation of China (No. 21072055) and the Shanghai Committee of Science and Technology, China (No. 09JC1403900).

语种：英文

外文关键词：Hydrazine hydrate; Degradation; Toxic organics; Dioxygen; Metal-free

摘要：Green and cost-effective eradication of pollutants from water is an important and long-standing goal in environmental chemistry. A broad spectrum of toxic organics in water was efficiently destroyed in the presence of dioxygen in combination with hydrazine hydrate at 150 degrees C. Under this operating condition, two typical classes of toxic organic chemicals, phenols and nitrobenzene derivatives were totally destroyed. The mineralization rate of these organics was 35-86%. Furthermore, when this degradation system was applied to degradation of actual waste water of wood pulp bleaching with chlorine (COD: 1830 mg/L), 77% COD decrease and 52% TOC mineralization of the wastewater were observed. In each case, the major degradation products are small molecular compounds, such as methanol, formic acid and acetic acid except CO/CO2. In the case of chlorophenols degradation, no dioxins and any other toxic compounds are detected by H-1 NMR. After degradation reaction, the hydrazine was also decomposed into N-2 and H2O, and no remaining hydrazine is found. (C) 2011 Elsevier B.V. All rights reserved.