文献类型：期刊文献

英文题名：Regeneration and reuse of iron catalyst for Fenton-like reactions

作者：Cao, Guo-min[1];Sheng, Mei[1];Niu, Wen-feng[1];Fei, Yu-lei[1];Li, Dong[1]

机构：[1]E China Univ Sci & Technol, Res Inst Environm Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：172

期号：2-3

起止页码：1446

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20095112556635);WOS:【SCI-EXPANDED(收录号:WOS:000271980800123)】；

语种：英文

外文关键词：Wastewater; Iron sludge; Catalyst; Regeneration

摘要：Fenton and Fenton-like reactions employed for oxidative treatment of a typical industrial wastewater generate a large amount of ferric hydroxide sludge which has to be properly disposed at a high cost. This paper presents a simple and cost-effective method for recovering the iron catalyst from the iron hydroxide sludge for oxidative treatment of industrial wastewaters. The sludge was dewatered, dried and baked at 350-400 degrees C for 20-30 min; the residual solids were dissolved in sulfuric acid to form the reusable catalyst for Fenton and Fenton-like reactions. The recovered catalyst was highly effective for the oxidative pretreatment of a fine chemical wastewater to improve its biodegradability; the resulting COD removal and BOD(5)/COD ratio of the treated stream remained nearly unchanged during the time period when the regenerated catalyst was reused six times. The simple and effective catalyst regeneration method will make Fenton and Fenton-like oxidation a more cost-effective wastewater treatment alternative. (C) 2009 Elsevier B.V. All rights reserved.