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首页> 外文期刊>Environmental Science & Technology >Reduction and Removal of Aqueous Cr(VI) by Glow Discharge Plasma at the Gas-Solution Interface
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Reduction and Removal of Aqueous Cr(VI) by Glow Discharge Plasma at the Gas-Solution Interface

机译：辉光放电等离子体在气体-溶液界面处还原和去除Cr（VI）水溶液

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摘要

Aqueous chromium(VI) reduction and removal induced by glow discharge taking place at the gas—solution interface in an argon atmosphere was studied. The effect of initial pH and hydroxyl radical scavenger (ethanol) on the reduction efficiency was examined. High reduction efficiency was obtained when initial pH ≤ 2.0 or ≥ 8.0. In particular, addition of ethanol into the solution substantially increased the reduction efficiency and facilitated chromium removal from the solution in the form of sediment after discharge. The optimum pH values for Cr(Vl) removal were within 6.0—7.0. Fourier transform-infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analysis confirmed that the main constituent of the sediment is chromium hydroxide.
机译：研究了在氩气气氛下，气-液界面处辉光放电引起的铬（VI）的还原和去除。检查了初始pH和羟基自由基清除剂（乙醇）对还原效率的影响。当初始pH≤2.0或≥8.0时，还原效率很高。特别地，向溶液中添加乙醇大大提高了还原效率，并有助于在排放后以沉淀物的形式从溶液中除去铬。去除Cr（VI）的最佳pH值在6.0-7.0之间。傅里叶变换红外（FTIR）光谱和X射线衍射（XRD）分析证实，沉积物的主要成分是氢氧化铬。

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  • 来源
    《Environmental Science & Technology》 |2011年第18期|p.7841-7847|共7页
  • 作者

    Zhigang Ke; Qing Huang; Hong Zhang; Zengliang Yu;

  • 作者单位

    Key Laboratory of Ion Beam Bio-engineering, Institute of Biotechnology and Agriculture Engineering, Hefei Institutes of PhysicalScience, Chinese Academy of Sciences, China;

    Key Laboratory of Ion Beam Bio-engineering, Institute of Biotechnology and Agriculture Engineering, Hefei Institutes of PhysicalScience, Chinese Academy of Sciences, China;

    Key Laboratory of Ion Beam Bio-engineering, Institute of Biotechnology and Agriculture Engineering, Hefei Institutes of PhysicalScience, Chinese Academy of Sciences, China;

    Key Laboratory of Ion Beam Bio-engineering, Institute of Biotechnology and Agriculture Engineering, Hefei Institutes of PhysicalScience, Chinese Academy of Sciences, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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