Enhanced degradation of trichloroethene by sodium percarbonate activated with Fe(II) in the presence of citric acid
作者: Xueke ZangXiaogang GuShuguang LuZhouwei MiaoXiang ZhangXiaori FuGeorge Y. FuZhaofu QiuQian Sui
作者单位: 1Shanghai Institute of Geological Engineering Exploration, Shanghai 200072, China
2State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China E-mail: lvshuguang@ecust.edu.cn
3Department of Construction Management & Civil Engineering Technology, Georgia Southern University, Statesboro, GA 30460-8047, USA
刊名: Water Science & Technology: Water Supply, 2017, Vol.17 (3), pp.665-673
来源数据库: International Water Association Journal
DOI: 10.2166/ws.2016.117
关键词: citric acidferrous iongroundwater remediationsodium percarbonatetrichloroethene
原始语种摘要: Trichloroethene (TCE) degradation by Fe(II)-activated sodium percarbonate (SPC) in the presence of citric acid (CA) in aqueous solution was investigated. The results indicated that the presence of CA enhanced TCE degradation significantly by promoting HO• generation. The presence of Cl, HCO3 and the initial solution pH appeared to be not negligible on the effect of TCE oxidation, while humic acid had no influence on TCE degradation. The generation of HO• and O2• in the SPC/Fe(II)/CA system was confirmed with chemical probes, and the radical scavenging tests showed that TCE degradation was due to direct oxidation by HO•. Acidic pH condition was favorable for TCE...
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  • degradation 减嚣夷酌
  • II Interactive Interface
  • presence 存在
  • citric 柠檬性的
  • percarbonate 过碳酸盐
  • oxidation 氧化
  • negligible 可忽略的
  • solution 溶液
  • aqueous 水的
  • sodium