Development of an Algerian material montmorillonite clay. Adsorption of phenol, 2-dichlorophenol and 2,4,6-trichlorophenol from aqueous solutions onto montmorillonite exchanged with transition metal complexes
Development of an Algerian material montmorillonite clay. Adsorption of phenol, 2-dichlorophenol and 2,4,6-trichlorophenol from aqueous solutions onto montmorillonite exchanged with transition metal complexes
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DOI：
10.1016/j.desal.2006.04.060
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发表时间：
2007-02-05
期刊：
影响因子：
9.9
通讯作者：
McWhinnie, W. R.
中科院分区：
文献类型：
--
作者：
Boufatit, M.;Ait-Amar, H.;McWhinnie, W. R.
有机粘土是首先用三2，2 ′-联吡啶铁（II）高氯酸盐络合物、其次用双三-（2-吡啶基）胺铁（II）高氯酸盐络合物、最后用双-[双-三-（1-吡唑基）硼酸]铁（II）络合物改性的钠-蒙脱石。这项工作的目的是研究当地的材料，蒙脱石粘土的行为，并看看这种粘土与过渡金属络合物交换的能力，以吸附危险物质，如氯化苯酚。研究了钠饱和过渡金属离子交换蒙脱石对苯酚、2-氯苯酚和2，4，6-三氯苯酚的吸附行为。吸附等温线符合Freundlich和Langmuir方程，但实验结果表明，亲有机粘土的吸附能力并不遵循逻辑顺序，而是取决于交换络合物的性质。苯酚、邻氯苯酚和2，4，6-三氯苯酚在交换蒙脱石上的吸附等温线为Langmuir型，即Ⅰ型和Ⅴ型。本工作涉及配合物的合成，并报道了某些配合物的制备方法。
The organo-clay is Na-montmorillonite modified first with tris 2,2'-bipyridyl iron (II) perchlorate complex, second with bis tri-(2-pyridyl) amine iron (II) perchlorate complex and finally with bis-[hydrido tris-(1-pyrazolyl) borato] iron (II) complex. The purpose of this work was to study the behaviour of local material, montmorillonite clay, and to look at the ability of this clay exchanged with transition metal complexes to sorb hazardous materials such as chlorinated phenols. We measured the sorption of phenol, 2-chlorophenol and 2,4,6-trichlorophenol by Na-saturated montmorillonite exchanged with transition metal complexes. Adsorption isotherms were fitted to the Freundlich and Langmuir equations, but the experimental results indicated that the adsorption capacity of organophilic clay did not obey a logical order, but depended on the nature of the exchanged complex. Two types of isotherms were obtained, the Langmuir, or type I and type V related to type III, isotherms were obtained in the adsorption of phenol, 2-chlorophenol and 2,4,6-trichlorophenol on exchanged montmorillonite. The work involves synthesis of complexes, and the method of preparation of some complexes is reported.