| 改性沸石的除氟性能研究 |
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| 引用本文： | 孙兴滨,席承菊.改性沸石的除氟性能研究[J].哈尔滨商业大学学报(自然科学版),2008,24(5):539-542. |
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| 作者姓名： | 孙兴滨 席承菊 |
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| 作者单位： | 东北林业大学,环境科学系,哈尔滨,150040 |
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| 摘 要： | 天然沸石经1mol／L盐酸浸泡后又经20％硫酸镁浸泡2d改性后除氟能力有较大提高．在此基础上研究了不同条件下改性沸石的除氟效果．随着接触时间的延长，沸石的除氟效果增强，但在40min以后增加缓慢，其吸附速度符合斑厄姆公式；随着原水质量浓度的增大，吸附容量也逐渐增大，吸附等温线可用Freundlich等温式描述．在动态试验中，改性沸石表现出了良好的除氟性能，其中，滤层的高度对吸附容量影响较大，随着滤层高度的增加，合格的出水体积也增加．改性沸石经再生后反复使用10次仍有较强的除氟能力．
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| 关 键 词： | 沸石 改性 除氟 |
Study on modification and fluoride-adsorption capacity of zeolite |
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| SUN Xing-bin,XI Cheng-ju.Study on modification and fluoride-adsorption capacity of zeolite[J].Journal of Harbin University of Commerce :Natural Sciences Edition,2008,24(5):539-542. |
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| Authors: | SUN Xing-bin XI Cheng-ju |
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| Institution: | SUN Xing-bin1,2,XI Cheng-ju1 (1.Department of Environmental Science,Northeast Forestry University,Harbin 150040,China,2.School of Municipal , Environmental Engineering,Harbin Insitute of Technology,Harbin 150090,China) |
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| Abstract: | Natural zeolite which is modified by being soaked in hydrochloric acid of 1mol/L concentration and then being soaked in magnesium sulfate of 20% concentration for 2 days could effectively remove fluoride from water.Based on these,the defluoridation capacity is studied under different conditions.Larger defluoridation is obtained with the longer contact time,but it increased slowly after 40 minutes contact.The adsorption speed fit the Banerm equation.The fluoride-adsorption capacity also increased with the in... |
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| Keywords: | zeolite modification defluoridation |
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