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| 金属铁去除水中Cr6+的影响因素研究 | |
| 引用本文： | 李红江,姜永海,席北斗,董东林,惠媛,韩亮.金属铁去除水中Cr6+的影响因素研究[J].环境工程学报,2011,5(3):503-506. |
| 作者姓名： | 李红江 姜永海 席北斗 董东林 惠媛 韩亮 |
| 作者单位： | 1. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083;中国环境科学研究院,北京,100012 2. 中国环境科学研究院,北京,100012 3. 中国矿业大学(北京)地球科学与测绘工程学院,北京,100083 |
| 基金项目： | 国家公益性行业科研项目（200909079）；国家“973”重点基础研究发展规划项目（2005CB724203） |
| 摘 要： | 研究Fe/Cr6+比值和不同浓度的NO3-、Cl-和SO42-对金属铁去除Cr6+效果的影响.结果表明,金属铁对水中Cr6+有很好的还原去除效果;当金属铁的使用量为Cr6+量的1/2000时,铁对Cr6+的去除效果较差且易失去活性,而当金属铁的使用量为Cr6+量的8 000倍时,铁对Cr6+的去除效果较好且其活性的持续... |
| 关 键 词： | 金属铁 Cr6+ 去除率 无机阴离子 |
Study on influencing factors of Cr6+ removal in water by metal iron |
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| Li Hongjiang,Jiang Yonghai,Xi Beidou,Dong Donglin,Hui Yuan and Han Liang.Study on influencing factors of Cr6+ removal in water by metal iron[J].Techniques and Equipment for Environmental Pollution Control,2011,5(3):503-506. | |
| Authors: | Li Hongjiang Jiang Yonghai Xi Beidou Dong Donglin Hui Yuan and Han Liang |
| Abstract: | The influence of Fe/Cr6+ ratio and the effect of NO-3,Cl-,SO2-4 concentrations on Cr6+ removal are studied in this research. The results show that Cr6+ in the contaminated water can be removed by metal iron. The removal efficiency decreases and the metal iron activity subjects to devitalize under Fe/Cr6+ ratio lower than 2 000, while the removal efficiecncy and metal iron activity can be improved when Fe/Cr6+ ratio is higher than 8 000. Three kinds of anions (NO-3,Cl-,SO2-4) can accelerate the removal process of Cr6+. However, there is no evident discrepancy for the influence of three kinds anions on Cr6+ removal at initial reaction, while the promotion function of SO2-4 for Cr6+ removal is more effective than Cl- and NO-3 afterward. The sequence of promotion ability of metal iron to Cr6+ removal is: SO2-4> Cl-> NO-3. |
| Keywords: | metal iron Cr6+ removal efficiency inorganic anions |
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