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聚酰胺胺-环糊精共聚物对水中2,4-二氯酚的吸附

Keywords: 聚酰胺胺,环糊精,2,4-二氯酚,吸附

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Abstract:

采用新型聚酰胺胺-环糊精共聚物(PAMAM-CD)静态吸附模拟废水中的2,4-二氯酚(DCP)。通过单因素和正交实验,研究了吸附时间、pH值、PAMAM-CD投加量(W)、溶液体积(V)、吸附温度(T)、溶液初始浓度(C0)等因素对吸附的影响,初步探讨了PAMAM-CD对DCP的吸附机理。实验结果表明:吸附条件对吸附容量(qe)的影响顺序为:C0>W>V>T。最佳吸附条件:C0=150mg/L,W=25mg,V=75mL,T=15℃。在此条件下的qe平均值达105.6mg/g,说明PAMAM-CD对DCP吸附能力强,吸附机理主要是因PAMAM-CD对DCP的包合、氢键等作用。

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