| 环糊精聚合物对苯胺的吸附和脱附性能研究 |
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| 引用本文： | 李宁,熊晓莉,赵文哲.环糊精聚合物对苯胺的吸附和脱附性能研究[J].环境工程学报,2009,3(12):2215-2218. |
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| 作者姓名： | 李宁 熊晓莉 赵文哲 |
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| 作者单位： | 重庆工商大学环境与生物工程学院,重庆,400067 |
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| 基金项目： | 重庆市教育委员会科技项目资助（KJ080713） |
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| 摘 要： | 以环氧氯丙烷为交联剂，合成和表征了β-环糊精聚合物(β-CDP)，从动力学和热力学角度研究了β-CDP对苯胺的吸附性能。研究结果表明，β-CDP对水溶液中的苯胺具有一定的吸附量。用Langmuir, Freundlich和DubininRadushkevich(D-R)吸附等温式拟合了平衡等温数据，并计算出每个模型的参数。苯胺在β-CDP上的吸附符合D-R方程，吸附过程是热力学自发行为。在乙醇中，β-CDP的脱附能力很强，且可循环使用多次。
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| 关 键 词： | β-环糊精聚合物 苯胺 吸附 脱附 |
Study on adsorption and desorption properties of β-cyclodextrin polymer for aniline |
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| Li Ning,Xiong Xiaoli and Zhao Wenzhe.Study on adsorption and desorption properties of β-cyclodextrin polymer for aniline[J].Techniques and Equipment for Environmental Pollution Control,2009,3(12):2215-2218. |
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| Authors: | Li Ning Xiong Xiaoli and Zhao Wenzhe |
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| Institution: | College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067,China,College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067,China and College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067,China |
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| Abstract: | β-Cyclodextrin polymer(β-CDP) was prepared by crosslinking β-cyclodextrin with epoxychloro- propane and characterized. The adsorption properties of β-CDP for aniline from aqueous solution were investiga-ted based on the kinetics and thermodynamics. Results of batch experiments showed that this adsorbent exhibited some sorption capacities toward aniline. Equilibrium isotherm data were analyzed according to Langmuir,Freun-dlich and Dubinin-Radushkevich (D-R) equations. The characteristic parameters for each model were deter-mined. The D-R isotherm gave the best correlation for the adsorption of aniline on β-CDP. The negative value of free energy change indicated the spontaneous nature of adsorption. The desorption capacity of β-CDP was so strong that it could be used as a kind of recyclable sorbent. |
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| Keywords: | aniline adsorption desorption |
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