| 蒽在腐殖酸溶液中的增溶热力学及动力学研究 |
| 摘要点击 2399 全文点击 2458 投稿时间：2008-12-28 修订日期：2009-02-17 |
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| 中文关键词 腐殖酸 蒽 胶束增溶 热力学 动力学 |
| 英文关键词 humic acid anthracene micellar solubilization thermodynamics kinetics |
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| 中文摘要 |
| 采用批平衡试验法, 研究了疏水性有机污染物蒽在腐殖酸溶液中的溶解热力学及动力学特征. 结果表明, 腐殖酸对蒽有一定的增溶性, 随着温度的升高, 增溶程度增强. 在25℃下蒽在腐殖酸溶液中的增溶行为为自发、吸热的熵增过程, ΔGθ=－1.682 kJ/mol, ΔHθ=11.96 kJ/mol, ΔS=45.78 J/(K·mol); 在35℃、45℃下ΔGθ分别为－2.140 kJ/mol和 －2.598 kJ/mol. 用几种溶解动力学曲线方程对腐殖酸增溶蒽的溶解动力学曲线进行了拟合, 结果表明腐殖酸增溶蒽的溶解动力学曲线更符合 Elovich 方程． |
| 英文摘要 |
| The solubilization thermodynamics and kinetics characteristics of hydrophobic pollutants anthracene in the humic acid micellar solutions have been investigated by using batch equilibrium test. The results showed that the solubilization rate of athracene was significantly enhanced with increasing temperature. The solubilization process of athracene was spontaneous, endothermic and entropy increasing with ΔGθ=－1.682 kJ/mol, ΔHθ=11.96 kJ/mol, ΔSθ=45.78 J/(K·mol) in 25℃, as well as ΔGθ=－2.140 kJ/mol and－2.598 kJ/mol in 35℃ and 45℃, respectively. The solubilization data of anthracene well fitted Elovich kinetics model. |
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