[煅烧镁/锌/铝层状双氢氧化物对高氯酸盐的吸附]
[Adsorption of perchlorate by calcined Mg/Zn/Al layered double hydroxides].
作者信息
Wang Hong-Yu, Liu Yan
出版信息
Huan Jing Ke Xue. 2014 Jul;35(7):2585-9.
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.
研究了Mg/Zn/Al层状双氢氧化物对高氯酸盐的吸附性能。采用X射线衍射（XRD）对样品进行了表征，并探讨了吸附等温线模型和动力学模型。研究了煅烧温度、Mg/Zn/Al摩尔比、溶液pH值、吸附时间和投加量对样品吸附性能的影响。实验结果表明，当Mg/Zn/Al摩尔比为2:1:1时，去除率和吸附量最高，pH值具有良好的适用性。高氯酸盐的吸附基本符合准二级动力学和Langmuir、Freundlich等温线模型。
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