文献类型：期刊文献

英文题名：Discoloration of methylene blue and wastewater from a plant by a Fe/Cu bimetallic system

作者：Ma, L.M.[1]; Ding, Z.G.[2]; Gao, T.Y.[1]; Zhou, R.F.[1]; Xu, W.Y.[1]; Liu, J.[1]

机构：[1]Tongji Univ, Natl Engn Res Ctr Urban Pollut Control, Shanghai 200092, Peoples R China;[2]E China Univ Sci & Technol, Dept Environm Engn, Shanghai 200237, Peoples R China

年份：2004

卷号：55

期号：9

起止页码：1207

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：2004188137105);WOS:【SCI-EXPANDED(收录号:WOS:000221212700007)】；

语种：英文

外文关键词：color; Fe/Cu system; zero-valent iron (Fe-0); wastewater; reduction

摘要：Using a Fe/Cu bimetallic system (Fe/Cu system), the discoloration of both methylene blue in aqueous solution and the colored wastewater from a plant was investigated under the anaerobic condition in batch or continuous reactors. Results show that the Fe/Cu system effectively removed the color with over 88% of color removal efficiency for both methylene blue solution and the wastewater from the plant in batch test. Color removal efficiencies increased rapidly with Fe/Cu dosage and reaction time, respectively, at initial time and slowly to stable values. Optimum pH was neutral range. In addition, in continuous test it also removed the color of the wastewater from the plant with 63% of discoloring efficiency under the condition of 2 It of hydraulic retention time and neutral range of pH (7.0-8.3). High discoloring efficiencies with low chemical oxygen demand removal efficiencies were found in all experiments. The reduction of chromophores in pollutants was the main mechanism of the discoloration in the Fe/Cu system. (C) 2004 Elsevier Ltd. All rights reserved.