Strong enhancement of trichloroethylene degradation in ferrous ion activated persulfate system by promoting ferric and ferrous ion cycles with hydroxylamine
作者: Xiaoliang WuXiaogang GuShuguang LuZhaofu QiuQian SuiXueke ZangZhouwei MiaoMinhui Xu
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
刊名: Separation and Purification Technology, 2015, Vol.147 , pp.186-193
来源数据库: Elsevier Journal
DOI: 10.1016/j.seppur.2015.04.031
关键词: PersulfateFerrous ionTrichloroethyleneHydroxylamineReactive oxygen species
英文摘要: Abstract(#br)The persulfate (PS) activated by ferrous ion (Fe(II)) system could generate reactive oxygen species capable of degrading refractory organic contaminants trichloroethylene (TCE). Nevertheless, the slow conversion from ferric ion (Fe(III)) back to Fe(II) limits its widespread practical application. Therefore, different reducing agents, i.e., hydroxylamine (HA), sodium thiosulfate, ascorbic acid, sodium ascorbate and sodium sulfite, were added into PS/HA system for accelerating the Fe(II) regeneration, and HA was most efficient in TCE degradation. The effects of HA, Fe(II) and PS concentrations were also evaluated in PS/Fe(II)/HA system. The results indicated that a proper HA and Fe(II) concentrations were needed in practical application, too low or too high dosages were adverse...
全文获取路径: Elsevier  (合作)
影响因子:2.894 (2012)

  • ferrous 亚铁的
  • system 
  • degradation 减嚣夷酌
  • hydroxylamine 羟胺
  • enhancement 增强
  • oxygen 
  • persulfate 过硫酸盐
  • species 
  • activated 激化了的
  • ferric 正铁的