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Adsorption of Chromium(VI) Removal from Wastewater by Ion-exchange Fiber

机译:离子交换纤维吸附去除废水中的六价铬

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The treatment principle of chromium(VI) removal from wastewater by ion-exchange fiber was introduced. Some factors affecting the adsorption were discussed through dynamic experiments. The result showed that pH value of wastewater was the key factor. The optimal pH was 2 and bed flow rate was 6-12 BV·h-1 at room temperature. With 2% NaOH in saturated NaCl or 2% KOH in 15% KCl at 12 BV·h-1, the regenerating rate of Cr(VI) was 98.09% and Cr(VI) could be recycled as Na2Cr2O7 and K2Cr2O7, respectively. Ion-exchange fiber showed high adsorption capacity for high concentration chromium(VI) ions.
机译:介绍了离子交换纤维去除废水中六价铬的处理原理。通过动态实验讨论了影响吸附的一些因素。结果表明,废水的pH值是关键因素。室温下最佳pH为2,床流速为6-12 BV·h-1。在12 BV·h-1下使用饱和NaCl中的2%NaOH或15%KCl中的2%KOH,Cr(VI)的再生​​率为98.09%,Cr(VI)可以分别作为Na2Cr2O7和K2Cr2O7循环使用。离子交换纤维对高浓度的六价铬离子具有高吸附能力。

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