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中文摘要：
本文利用高岭土对胡敏酸吸附形成稳定的有机一无机络合物，研究了高岭土／胡敏酸复合体对Cu^2＋、Cd^2＋和Cr^2＋的吸附。结果表明，胡敏酸对高岭土改性后能提高上述三种重金属离子的吸附性能，高岭土／胡敏酸复合体对三种重金属离子的吸附量都随pH值的升高而增加，随离子强度的增加而减小。本文还研究了高岭土／胡敏酸复合体对上述三种重金属离子的吸附动力学，发现吸附过程可用Elovich方程和一级动力学方程进行较好的拟合。
英文摘要：
In this paper, the Kaolinite / humic acid complex was prepared, and sorption of Cu2＋ , Cd2＋ , Cr3＋ on the Kaolinite / humic acid complex was studied. The results showed that humic acid can modified the Kaolinite to improve its adsorption capacity. The adsorption capacity of these three kinds of heavy metal ions increased when pH increasing and decreased when the ionic strength increasing. The sorption kinetic characteristics of these three kinds of heavy metal ions on Kaolinite-humic acid complex was also studied, and it was found that Elovich equation and One-level kinetic equation can adequately describe the kinetic sorption procedures.
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