Removal of rhodamine B using iron-pillared bentonite

文献类型： 外文期刊

第一作者： Hou, Mei-Fang

作者： Hou, Mei-Fang;Zhang, Wei-De;Hou, Mei-Fang;Tang, Xiao-Yan;Fan, Yan-Ning;Wan, Hong-Fu;Ma, Cai-Xia

作者机构：

关键词： clay;bentonite;iron pillaring;rhodamine b;adsorption

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The iron-pillared bentonite (Fe-Ben) was prepared by ion-exchange using the natural bentonite (GZ-Ben) from Gaozhou, China, at room temperature without calcination. Both Fe-Ben and GZ-Ben were characterized by X-ray diffraction, N_2 adsorption and Fourier transform infrared spectroscopy. The results show that the d(001) value and surface area of the bentonite material increased after iron pillaring. Fe-Ben adsorbed much more Rhodamine B (RhB) than GZ-Ben, which can be ascribed to the special surface properties and large surface area of Fe-Ben. The optimum pH value for the adsorption of RhB on Fe-Ben is 5.0. The adsorption of RhB onto Fe-Ben can be well described by the pseudo-second-order kinetic model and the intraparticle diffusion kinetic model. The adsorption isotherm of RhB onto Fe-Ben matches well with the Langmuir model.

分类号： TB1

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