| KH-560交联壳聚糖固载β-环糊精薄膜对硝基苯酚的吸附行为 |
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| 引用本文： | 查飞,马剑,常玥,董芳,常铎.KH-560交联壳聚糖固载β-环糊精薄膜对硝基苯酚的吸附行为[J].环境污染与防治,2012,34(5):24-27. |
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| 作者姓名： | 查飞 马剑 常玥 董芳 常铎 |
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| 作者单位： | 西北师范大学化学化工学院,甘肃 兰州,730070 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研究了KH-560交联壳聚糖固载β-环糊精薄膜对4-硝基苯酚、2,4-二硝基苯酚和2,4,6-三硝基苯酚的吸附行为,测定了吸附质浓度、pH、温度和吸附时间对其吸附性能的影响,并进行了热力学拟合。研究结果表明,在中性条件下,298K下吸附4-硝基苯酚在40min时可以达到平衡;随着硝基数目的增加,吸附量增大;随着温度的升高,吸附量减小;吸附过程用Langmuir模型描述更合适。
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| 关 键 词： | KH-560交联壳聚糖固载β-环糊精 硝基苯酚 吸附剂 等温吸附 |
Adsorption of KH-560 crosslinked chitosan-β-cyclodextrin membranes for nitrophenolic compounds |
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| ZHA Fei
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MA Jian
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CHANG Yue
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DONG Fang
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CHANG Duo.Adsorption of KH-560 crosslinked chitosan-β-cyclodextrin membranes for nitrophenolic compounds[J].Environmental Pollution & Control,2012,34(5):24-27. |
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| Authors: | ZHA Fei MA Jian CHANG Yue DONG Fang CHANG Duo |
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| Institution: | .(College of Chemistry & Chemical Engineering,Northwest Normal University,Lanzhou Gansu 730070) |
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| Abstract: | The adsorption behavior of 4-nitrophenol,2,4-binitrophenol and 2,4,6-trinitrphenol on the film of KH-560 modified chitosan supported β-cyclodextrin was studied.The effects of concentration of nitrophenolic compounds,pH,temperature and adsorption time on the adsorption were examined.The adsorption data were fitted by the thermodynamic models.Results showed that the adsorption process of 4-nitrophenol reached equilibrium in 40 min at 298 K and neutrally condition;the adsorption capacity was increased with the increasing of nitro-group.Thermodynamic study showed the adsorption capacity of the adsorbent decreased with increasing the temperature.The adsorption process can be simulated by the Langmuir isothermal equation well. |
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| Keywords: | KH-560 crosslinked chitosan-β-cyclodextrin nitrophenol adsorbent isothermal adsorption |
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