Removal of fluoride from aqueous solution using graphite: A kinetic and thermodynamic study

被引：0

作者：

Karthikeyan, M. ^{[1
]}

Elango, K. P. ^{[1
]}

机构：

[1] Gandhigram Rural Univ, Dept Chem, Gandhigram 624302, India

来源：

INDIAN JOURNAL OF CHEMICAL TECHNOLOGY | 2008年 / 15卷 / 06期

关键词：

Adsorption; Fluoride; Graphite; Kinetics; Thermodynamics;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Batch sorption system using various grades of graphite as adsorbents was investigated to remove fluoride, ions from aqueous solutions. The system variables studied include initial concentration of the sorbate, agitation time, adsorbent close, pH, co-ions and temperature. The experimental data fitted well to the Freundlich and Langmuir isotherms. Thermodynamic parameters such as Delta H degrees, Delta S degrees and Delta G degrees were calculated which indicated that the adsorption was endothermic and a physical process. Kinetic studies reveal that the adsorption follows reversible first order kinetics. XRD patterns of the adsorbent before and after adsorption were recorded to get a better in sight into the mechanism of the adsorption process.

引用

页码：525 / 532

页数：8

共 39 条

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