Adsorption of Norfloxacin from Aqueous Solution onto Modified Coal Fly Ash

被引：6

作者：

Zhang, Cong-Liang ^{[1
]}

Li, Bao-Ying ^{[1
]}

Wang, Yan ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem Engn, Zhengzhou 450002, Peoples R China

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2010年 / 33卷 / 06期

关键词：

Adsorption; Isotherm; Modified coal fly ash; Norfloxacin; SULFONAMIDES; REMOVAL;

D O I：

10.1002/ceat.200900241

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Batch adsorption experiments were carried out for the removal of norfloxacin from aqueous solution using modified coal fly ash as adsorbent. The effects of various parameters such as contact time, initial solution concentration and temperature on the adsorption system were investigated. The optimum contact time was found to be 100 min. The equilibrium experimental data can be well fitted by the Freundlich model. Thermodynamic parameters such as Delta G, Delta H and Delta S were also calculated. The negative Gibbs free energy change and enthalpy change indicated the spontaneous and exothermic nature of the adsorption, and the negative entropy change indicated that the adsorption process was aided by decreased randomness.

引用

页码：969 / 972

页数：4

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