| 柱撑蒙脱石吸附水中硫酸根离子的实验研究 |
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| 引用本文： | 刘桂荣,廖立兵.柱撑蒙脱石吸附水中硫酸根离子的实验研究[J].矿物学报,2001,21(3):470-472. |
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| 作者姓名： | 刘桂荣 廖立兵 |
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| 作者单位： | 中国地质大学材料科学与工程学院 |
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| 摘 要： | 在实验条件下，制备了两种柱撑蒙脱石，用X射线衍射分析和BET N2比表面积分析对其进行了表征，并对水中的硫酸根离子进行了吸附试验，通过正交实验研究了柱撑蒙脱石对水中硫酸根离子的吸附率、吸附容量及其与硫酸根离子初始浓度、PH值、吸附时间等因素间的关系，确定了它们吸附硫酸根离子的适宜条件，并与钠蒙脱石对水中硫酸根离子的吸附情况进行了对比。在此基础上初步探讨了吸附的机理，认为A13及Al2O3柱撑蒙脱石具有很强的吸附硫酸根离子的能力，在pH分别为4和5时硫酸根离子去除效果最好。
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| 关 键 词： | 柱撑蒙脱石 吸附 硫酸根离子 X射线衍射分析 比表面积 |
| 文章编号： | 1000-4734(2001)03-0470-03 |
| 修稿时间： | 2000年11月17 |
REMOVAL OF SULFATE FROM AQUEOUS SOLUTIONS BY ADSORPTION ON PILLARED MONTMORILLONITE |
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| Liu Guirong,Liao Libing.REMOVAL OF SULFATE FROM AQUEOUS SOLUTIONS BY ADSORPTION ON PILLARED MONTMORILLONITE[J].Acta Mineralogica Sinica,2001,21(3):470-472. |
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| Authors: | Liu Guirong Liao Libing |
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| Abstract: | Two kinds of Al pillared montmorillonites were prepared and characterized by means of powder X-ray diffraction and BET N 2 adsorption surface area analysis. Sulfate adsorption experiments with Al 13 and Al 2O 3 pillared montmorillonites were conducted. The optimum sulfate-adsorption conditions of these two samples were investigated in detail. Desulfation mechanism also was discussed. The results showed that Al 13 and Al 2O 3 pillared montmorillonites are strong in sulfate-adsorption capacity at pH=5 and 4, respectively. |
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| Keywords: | pillared montmorillonite adsorption sulfate |
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