| Synthesis and characterization of zeolite X obtained from kaolin for adsorption of Zn（Ⅱ） |
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| 作者单位： | Faculty of Science, Suez Canal University, Suez, Egypt |
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| 摘 要： |
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| 关 键 词： | X型分子筛 煅烧高岭土 合成过程 锌（Ⅱ） 锌吸附 离子交换器 表征 X射线衍射仪 |
| 收稿时间： | 31 January 2007 |
Synthesis and characterization of zeolite X obtained from kaolin for adsorption of Zn(II) |
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| Authors: | I S Ismael |
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| Institution: | Faculty of Science, Suez Canal University, Suez, Egypt |
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| Abstract: | This study deals with the synthesis and characterization of low-silica zeolite X, from calcined Kalabsha kaolin, for adsorption of Zn(Ⅱ) ions from aqueous solution. The synthesis processes is performed under hydrothermal treatment in alkaline solutions. The obtained zeolite samples are characterized using X-ray diffraction, grain size distribution, surface area, and SEM. The critical molar ratios of both SiO2/Al2O3 and K2O/Na2O are about 2.9 and 0.16, respectively. Those ratios are needed to give individual low silica zeolite X in a minimum reaction time. The adsorption capacity of the synthesized products is determined by adsorption of Zn(Ⅱ) ions from solution. The results suggest that the zeolite obtained could be converted to a beneficial product, which will be used in future as an ion exchanger in removing heavy metals from wastewaters. |
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| Keywords: | kaolin low silica zeolite hydrothermal treatment |
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