Mechanism of PCE oxidation by percarbonate in a chelated Fe(II)-based catalyzed system
作者: Zhouwei MiaoXiaogang GuShuguang LuDionysios D. DionysiouSouhail R. Al-AbedXueke ZangXiaoliang WuZhaofu QiuQian SuiMuhammad Danish
作者单位: 1State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
2Environmental Engineering and Science Program, Department of Biomedical, Chemical and Environmental Engineering (DBCEE), College of Engineering and Applied Science, University of Cincinnati, OH 45221-0012, USA
3Office of Research and Development, National Risk Management Research Laboratory, U.S. EPA, Cincinnati, USA
刊名: Chemical Engineering Journal, 2015, Vol.275 , pp.53-62
来源数据库: Elsevier Journal
DOI: 10.1016/j.cej.2015.04.014
关键词: Perchloroethylene (PCE)Sodium percarbonate (SPC)Chelated-Fe(II)Hydroxyl radical (HO )Groundwater remediation
英文摘要: Abstract(#br)The performance of chelated Fe(II)-based catalyzed sodium percarbonate (SPC) stimulating the degradation of perchloroethylene (PCE) in aqueous solution was investigated using six different chelating agents (CA), namely, citric acid monohydrate (CIT), oxalic acid (OA), l -ascorbic acid (ASC), ethylenediaminetetraacetic acid (EDTA), trisodium citrate 2-hydrate (CIT-Na 3 ), and EDTA-Na 2 , at CA/Fe(II)/SPC/PCE molar ratios of 2/4/4/1, 4/4/4/1 and 8/4/4/1. The results indicated that the addition of CIT and OA significantly enhanced the PCE degradation. In addition, investigations using free radical probe compounds and radical scavengers revealed that PCE was primarily degraded by HO radical oxidation in Fe(II)/SPC, CIT/Fe(II)/SPC, and OA/Fe(II)/SPC systems...
全文获取路径: Elsevier  (合作)
影响因子:3.473 (2012)

  • percarbonate 过碳酸盐
  • II Interactive Interface
  • catalyzed 催化的
  • PCE Processing and Control Element
  • remediation 矫正
  • glyph 符号
  • radical 
  • based 基于
  • oxidation 氧化
  • SPC Stored Program Control