| 腐殖酸自水溶液中吸附亚甲基蓝的热力学与机理研究 |
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| 引用本文： | 王红斌,杨敏,宁平,陈毅坚.腐殖酸自水溶液中吸附亚甲基蓝的热力学与机理研究[J].化学研究与应用,2002,14(4):449-451. |
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| 作者姓名： | 王红斌 杨敏 宁平 陈毅坚 |
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| 作者单位： | 1. 云南民族学院化学系,云南,昆明,650031
2. 昆明理工大学环境科学与工程学院,云南,昆明,650031 |
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| 摘 要： | 腐殖酸是自然界植物残体经腐解后的产物 ,为一种复杂的天然大分子有机质 ,分子内主要含有羰基、羧基、醇羟基、酚羟基等多种活性官能团 ,因此它具有弱酸性、亲水性、吸附性和络合性 ,能够与许多有机、无机物发生相互作用。腐殖酸能作为水处理过程中的吸附剂 ,研究它对水中各类污染物的吸附规律和机理是十分有意义的。赵振国等1～ 3] 运用吸附过程的ΔＧ 、ΔＨ 、ΔＳ 等热力学函数的变化来探讨吸附机理 ,得出了一些有意义的结论。我们将这一方法应用到水溶液体系中 ,探讨在不同吸附条件下各吸附热力学函数的变化 ,以期对吸附过程有更进一…
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| 关 键 词： | 水溶液 腐殖酸 亚甲基蓝 吸附热力学 吸附机理 |
| 文章编号： | 1004-1656(2002)04-0449-03 |
| 修稿时间： | 2001年11月12 |
Study on mechanism and thermodynamics of methylence blue adsorption from aqueous solution by humic acid |
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| WANG Hong bin ,YANG Min ,NING Ping ,CHEN Yi jian.Study on mechanism and thermodynamics of methylence blue adsorption from aqueous solution by humic acid[J].Chemical Research and Application,2002,14(4):449-451. |
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| Authors: | WANG Hong bin YANG Min NING Ping CHEN Yi jian |
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| Institution: | WANG Hong bin 1,YANG Min 1,NING Ping 2,CHEN Yi jian 1 |
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| Abstract: | This paper studies the characteristics and mechanism of the adsorption of methylence blue from aqueous solution by humic acid which was extracted from swampy soil in Zhongdian of Yunnan in two methods.The result shows that the adsorption could fit the langmuir model.Humic acids extracted in two methods has the similar pattern of adsorption,but the Humic acid by sodium pyrophosphate has better adsorption because of its bigger specific surface area.The adsorptive constant and thermodynamic parameters have been evaluated in different temperatures.Furthermore the mechanism of adsorption on the humic acid has been discussed. |
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| Keywords: | swampy soil humic acid methylence blue adsorption thermodynamics |
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