| 类水滑石Mg/Zn/Al焙烧产物对高氯酸盐的吸附 |
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| 引用本文： | 王红宇,刘艳.类水滑石Mg/Zn/Al焙烧产物对高氯酸盐的吸附[J].环境科学,2014,35(7):2585-2589. |
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| 作者姓名： | 王红宇 刘艳 |
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| 作者单位： | 浙江工业大学建筑工程学院, 杭州 310014;浙江工业大学建筑工程学院, 杭州 310014 |
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| 基金项目： | 国家自然科学基金项目（21376219） |
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| 摘 要： | 利用类水滑石Mg/Zn/Al的焙烧产物对ClO-4进行吸附性能研究,通过类水滑石表面结构X射线衍射分析并探讨其吸附等温、动力学模型,并研究了焙烧温度、Mg/Zn/Al质量比、溶液pH值、吸附时间及吸附剂投加量等因素对类水滑石Mg/Zn/Al吸附ClO-4的性能影响.结果表明在500℃下焙烧4 h,Mg/Zn/Al质量比为2∶1∶1的类水滑石对ClO-4去除效果较好,吸附容量最大且对溶液pH值有较好的适用范围.经500℃焙烧的类水滑石吸附ClO-4的动力学拟合结果符合二级反应动力学模型,吸附等温线符合Langmuir及Freundlich吸附等温模型.
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| 关 键 词： | 类水滑石Mg/Zn/Al 焙烧 吸附 动力学 高氯酸盐 |
| 收稿时间： | 2013/11/13 0:00:00 |
| 修稿时间： | 2014/2/24 0:00:00 |
Adsorption of Perchlorate by Calcined Mg/Zn/Al Layered Double Hydroxides |
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| WANG Hong-yu and LIU Yan.Adsorption of Perchlorate by Calcined Mg/Zn/Al Layered Double Hydroxides[J].Chinese Journal of Environmental Science,2014,35(7):2585-2589. |
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| Authors: | WANG Hong-yu and LIU Yan |
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| Institution: | College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China;College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China |
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| Abstract: | The adsorption capacity of perchlorate by Mg/Zn/Al layered double hydroxides was investigated. The samples were characterized by X-ray diffraction (XRD) and the adsorption isothermal model and dynamic model were discussed. The effect of calcination temperature, Mg/Zn/Al molar ratio, pH value of solution, adsorption time and dosage on the adsorption capacity of samples were studied. The experiment results showed that the removal ratio and adsorption capacity reached the highest and the pH value had good applicability when the molar ratio was Mg/Zn/Al=2:1:1. The adsorption of perchlorate basically conformed to the pseudo-second kinetics and Langmuir, Freundlich isotherm model. |
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| Keywords: | Mg/Zn/Al layered double hydroxides calcined adsorption kinetics perchlorate |
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