| AB-8大孔树脂对柴胡总黄酮的吸附行为研究 |
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| 引用本文： | 徐祖伟,于朝生,窦烁. AB-8大孔树脂对柴胡总黄酮的吸附行为研究[J]. 化学工程, 2013, 41(2): 33-37 |
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| 作者姓名： | 徐祖伟 于朝生 窦烁 |
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| 作者单位： | 东北林业大学理学院阻燃材料分子设计与制备黑龙江省重点实验室,黑龙江哈尔滨,150040 |
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| 摘 要： | 采用静态吸附法研究了AB-8树脂对柴胡总黄酮的吸附动力学及热力学特性。动力学研究表明,准二级动力学模型能较好地描述整个吸附过程;颗粒内扩散模型拟合的曲线呈现多重线性,说明不同阶段的吸附速率受到树脂孔径分布的影响。热力学研究表明,在实验温度下,AB-8树脂对柴胡总黄酮的吸附过程符合Langmuir等温模型,吸附的吉布斯自由能变ΔG<0,焓变ΔH和熵变ΔS分别为10.51 kJ/mol和44.15 J/(mol.K),说明该吸附能是自发进行的吸热过程。
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| 关 键 词： | AB-8大孔树脂 柴胡 总黄酮 动力学 热力学 |
Adsorption behavior of AB-8 macroporous resin for total flavonoids in Bupleurum |
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| XU Zu-wei , YU Chao-sheng , DOU Shuo. Adsorption behavior of AB-8 macroporous resin for total flavonoids in Bupleurum[J]. Chemical Engineering, 2013, 41(2): 33-37 |
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| Authors: | XU Zu-wei YU Chao-sheng DOU Shuo |
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| Affiliation: | (Heilongjiang Key Lab of Molecular Design and Preparation of Flame Retarded Materials, College of Science,Northeast Forestry University,Harbin 150040,Heilongjiang Province,China) |
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| Abstract: | The kinetics and thermodynamics of the adsorption of total flavonoids in Bupleurum by AB-8 macroporous resin were studied using the static adsorption method.The kinetics results show that the pseudo-second order kinetics model can better describe the whole adsorption process.The multicollinearity of curves fitted by the intra-particle diffusion model demonstrates that the adsorption rates at different stages are influenced by the pore size distribution.The thermodynamics results show that the adsorption process fits the Langmuir isothermal model in the studied temperature range.The thermodynamic properties,i.e.ΔGΘ<0,ΔHΘ=10.51 kJ/mol and ΔSΘ=44.15 J/(mol·K),indicate that the adsorption process is spontaneous and endothermic. |
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| Keywords: | AB-8 macroporous resin Bupleurum total flavonoids kinetics thermodynamics |
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