水溶液
铬
化学
傅里叶变换红外光谱
氩
辉光放电
氢氧化物
食腐动物
分析化学(期刊)
无机化学
核化学
等离子体
色谱法
激进的
化学工程
有机化学
物理
量子力学
工程类
作者
Zhixin Ke,Qing Huang,Hong Zhang,Zengliang Yu
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(VI) 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.
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