中文摘要：

研究了CuCl2在荷结构负电荷皂土上的吸附性能,考察了pH、无机以及有机添加剂等因素的影响,并结合IR和XRD实验结果探讨了吸附机理。研究表明,皂土对CuCl2有很强的吸附能力,其吸附动力学和吸附等温线分别符合准二级速率方程和Langmuir方程。初始pH增大,吸附量增加。无机以及有机添加剂均能能明显抑制吸附。Cu2＋在皂土上的吸附层在微观上可分为因化学键合作用而形成的内络合层和因静电作用而形成的外络合层。

英文摘要：

Adsorption properties of CuCl2 on bentonite were studied,the influence of initial solution pH,additives of inorganic electrolytes and organic ligands on the adsorption were investigated,and the adsorption mechanism was discussed in combination with the results of IR and XRD experiments.It was found that the bentonite shows good adsorption ability for Cu2＋ from solution.The adsorption kinetics and the adsorption isotherms of Cu2＋ on the bentonite can be described by the pseudo-second order kinetic and Langmuir isotherm,respectively.With increasing pH,the adsorption amount increases.The additives can obviously restrain the adsorption of Cu2＋ on the bentonite.The adsorption layer of Cu2＋ on the bentonite can be divided into two parts： the inner-sphere surface complexes arising from the chemical binding and the outer-sphere surface complexes arising from the electrostatic interaction.