| 天然硅藻土吸附活性染料的热力学研究 |
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| 引用本文： | 谷志攀,何少华,周炀,樊海明,刘静,司建伟. 天然硅藻土吸附活性染料的热力学研究[J]. 山东化工, 2009, 38(4): 7-10 |
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| 作者姓名： | 谷志攀 何少华 周炀 樊海明 刘静 司建伟 |
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| 作者单位： | 南华大学,城市建设学院,湖南,衡阳,421001;南华大学,城市建设学院,湖南,衡阳,421001;南华大学,城市建设学院,湖南,衡阳,421001;南华大学,城市建设学院,湖南,衡阳,421001;南华大学,城市建设学院,湖南,衡阳,421001;南华大学,城市建设学院,湖南,衡阳,421001 |
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| 摘 要： | 研究了天然硅藻土吸附水溶液中两种活性染料活性黑K—RB和活性金黄X—G的吸附特性。结果表明：两种活性染料平衡吸附量都随温度上升而上升，在相同条件下活性黑平衡吸附量大于活性金黄，染料分子的大小、官能团是影响吸附主要因素。两种染料吸附等温线均符合Langmuir和Freundlich方程，表明吸附主要是物理吸附，属于多层吸附。吸附是一个吸热反应△H〉0，自发进行（△G〈0），AS总是正值，此外，根据实验数据，计算了吸附势E，其值随吸附量增多而减小。
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| 关 键 词： | 天然硅藻土 活性染料 吸附等温式 热力学 |
The Thermodynamic Study on Adsorption of Reactive Dyes by Nature Diatomite |
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| GU Zhi-pan,HE Shao-hua,ZHOU Yang,FAN Hai-ming,LIU Jing,SI Jian-wei. The Thermodynamic Study on Adsorption of Reactive Dyes by Nature Diatomite[J]. Shandong Chemical Industry, 2009, 38(4): 7-10 |
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| Authors: | GU Zhi-pan HE Shao-hua ZHOU Yang FAN Hai-ming LIU Jing SI Jian-wei |
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| Affiliation: | School of Urban Construction;University of South China;Hengyang 421001;China |
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| Abstract: | The adsorption capability of nature diatomite to reactive dyes(reactive black K-RB and reactive golden yellow X-G) in aqueous solution was studied.The results showed that the adsorption capacity(qe)of each dye increased with the temperature.On the same condition,the qe of reactive black was more than reactive golden yellow,and molecule size and functional groups of dyes were important factors to adsorption reaction.The two dyes adsorption on nature diatomite fitted well to Langmuir and Freundlich isotherm w... |
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| Keywords: | nature diatomite reactive dyes adsorption isotherm thermodynamics |
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