| 零价铁（ZVI）去除Cu2+的特性及机制研究 |
| 摘要点击 2539 全文点击 1491 投稿时间：2008-12-13 修订日期：2009-03-11 |
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| 中文关键词 铜离子 零价铁 动力学 氧化还原 重金属 废水处理 |
| 英文关键词 copper ion zero-valent iron (ZVI) kinetics redox reaction heavy metal wastewater treatment |
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| 中文摘要 |
| 研究了零价铁去除水溶液中铜离子的影响因素及动力学特性，并利用X射线衍射（XRD）分析对反应机制进行了探讨.结果表明，当溶液中Cu2+的浓度为300 mg/Ｌ，零价铁的用量为1 g/Ｌ时，Cu2+的去除率>99%.Cu2+的去除速度很快，且反应前30 min零价铁去除Cu2+的过程可以用一级反应动力学方程模拟.零价铁去除Cu2+的机制主要基于氧化还原反应，Cu2+的还原产物主要为Cu和Cu2Ｏ. |
| 英文摘要 |
| The influencing factors and kinetics of copper ions removal from aqueous solution by zero-valent iron (ZVI) was investigated, the mechanism of Cu2+ removal was analyzed using X-ray diffraction (XRD). The experimental results showed that ZVI had been turned out to be an effective tool for the removal of Cu2+ from aqueous solution. More than 99% of Cu2+ could be removed at an initial concentration of 300 mg/Ｌ by ZVI at the dosage of 1 g/Ｌ. The removal of Cu2+ in the first 30 min could be described by the first-order kinetic model with high correlation coefficient. The XRD analysis suggested that the mechanism for Cu2+ removal was mainly based on the redox reaction, which resulted in the formation of Cu2Ｏ and CuO as the main reduced products of Cu2+. |
