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环境工程学报 2011

聚苯胺对铬(Ⅵ)离子的吸附性能研究

刘德丽,孙德智

Keywords: 聚苯胺,吸附,铬离子

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Abstract:

以聚苯胺为吸附剂，静态吸附六价铬离子。聚苯胺采用氧化法在常温下合成，用XRD和紫外可见分光光度计进行表征。实验研究了不同条件下（溶液浓度、吸附时间和pH）对吸附性能的影响。静态吸附实验得出聚苯胺对六价铬离子吸附符合Langmuir等温吸附模型和二级动力学模型。在20℃、溶液pH值为3时单分子层最大吸附能力为198.41mg/g。并根据实验计算出吸附过程的热力学参数ΔH°、ΔS°和ΔG°。通过研究得出聚苯胺可以用作吸附剂去除废水中的六价铬离子。

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