Defluoridation of water via doping of polyanilines

被引：50

作者：

Karthikeyan, M. ^{[1
]}

Satheeshkumar, K. K. ^{[1
]}

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

机构：

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 163卷 / 2-3期

关键词：

Adsorption; Defluoridation; Isotherms; Polyaniline; FLUORIDE REMOVAL; ADSORPTION; EQUILIBRIUM; ELECTRODES;

D O I：

10.1016/j.jhazmat.2008.07.057

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The potentiality of polyaniline and poly (m-methyl aniline) to remove fluoride from water via doping was investigated. The influence of pH, dosage of polyanilines, initial fluoride concentration and temperature on the amount of fluoride removed by the polyanilines were studied. The amount of fluoride removed at pH 7.0 by 50 mg/50 ml dose was found to be 0.78 mg/g. The data of fluoride removal fitted well with Langmuir and Freundlich isotherms. Thermodynamic parameters computed show that the adsorption process is endothermic in nature. FT-IR, X-ray and EDAX patterns of the polyanilines before and after exposure to fluoride ions suggest that the defluoridation occurs via doping of fluoride ions onto these polymers. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1026 / 1032

页数：7

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